* GIÚP MÌNH VỚI Memo No..____,Date______,Bài 1. Tính giá trị của biểu thức,

,
$2)~5:(\frac{-5}2)^2+\frac2{15}.\sqrt{\frac94}-(-2024)^0|^{11}\frac{11}{17}.\frac{-5}8+\frac{-3}8.\frac{11}{17}.$,

,$7)~-\frac34+(3\frac18+5\frac{13}{21}+2025)^0+0,75$,

$8)~\sqrt{\frac{16}{49}}+|\frac{-4}7|-\frac97.|-\frac13)^2-1$,$16)~\frac{16}{19}.\frac{-7}5-\frac{16}9.\frac25$
"$5)~1\frac25-|\frac1{16}+|\frac{-7}{10}|$
$10)~(\frac45-\frac12)^{20}:(\frac{-3}{10})^{20}$
$10)~(\frac45-\frac12)^{22}:(\frac3{10})^{20}.$","$17)~\frac{-15}{17}.\frac5{13}-\frac{15}{17}.\frac8{13}-\frac2{17}$
$18)~\frac3{11}.\frac{-5}9-\frac3{11}.\frac49-\frac5{11}$
$15)~(-\frac3{85}-\frac7{25}-2024)^0:(\frac53)^2$"

,Bài 2: Tìm x,

"$1,~\frac35-x=\frac27$
$2,~(x-3)^2-\frac19=0$
$3|x-\frac32|-\frac54=1\frac12$","$7)~x+1\frac15=\frac7{10}$
$8)|x-\frac25|+\frac34=\frac{11}4$
$9,~2x-\frac34=\frac14$
$10)~\frac{|x-3|}5=\frac12$"
"$4,~0,75-\frac12x=\frac73$",$11)~\sqrt{\frac{16}{81}}+x=\frac{13}9$
"$5,~-1\frac34-\frac54:x=\frac72$",$12)|x-\frac23|=\frac12$
"$6,~-2\frac13+\frac72:x=1\frac13$","$13)~\frac57+\frac27:x=0,75$"

,HÀI TIẾN

Question

* GIÚP MÌNH VỚI Memo No..____,Date______,Bài 1. Tính giá trị của biểu thức,

,
$2)~5:(\frac{-5}2)^2+\frac2{15}.\sqrt{\frac94}-(-2024)^0|^{11}\frac{11}{17}.\frac{-5}8+\frac{-3}8.\frac{11}{17}.$,

,$7)~-\frac34+(3\frac18+5\frac{13}{21}+2025)^0+0,75$,

$8)~\sqrt{\frac{16}{49}}+|\frac{-4}7|-\frac97.|-\frac13)^2-1$,$16)~\frac{16}{19}.\frac{-7}5-\frac{16}9.\frac25$
"$5)~1\frac25-|\frac1{16}+|\frac{-7}{10}|$ 
 $10)~(\frac45-\frac12)^{20}:(\frac{-3}{10})^{20}$ 
 $10)~(\frac45-\frac12)^{22}:(\frac3{10})^{20}.$","$17)~\frac{-15}{17}.\frac5{13}-\frac{15}{17}.\frac8{13}-\frac2{17}$ 
 $18)~\frac3{11}.\frac{-5}9-\frac3{11}.\frac49-\frac5{11}$ 
 $15)~(-\frac3{85}-\frac7{25}-2024)^0:(\frac53)^2$"

,Bài 2: Tìm x,

"$1,~\frac35-x=\frac27$ 
 $2,~(x-3)^2-\frac19=0$ 
 $3|x-\frac32|-\frac54=1\frac12$","$7)~x+1\frac15=\frac7{10}$ 
 $8)|x-\frac25|+\frac34=\frac{11}4$ 
 $9,~2x-\frac34=\frac14$ 
 $10)~\frac{|x-3|}5=\frac12$"
"$4,~0,75-\frac12x=\frac73$",$11)~\sqrt{\frac{16}{81}}+x=\frac{13}9$
"$5,~-1\frac34-\frac54:x=\frac72$",$12)|x-\frac23|=\frac12$
"$6,~-2\frac13+\frac72:x=1\frac13$","$13)~\frac57+\frac27:x=0,75$"

,HÀI TIẾN

Accepted Answer

Bài 2:

$\displaystyle \begin{array}{{>{\displaystyle}l}}
1) \ \frac{3}{5} -x=\frac{2}{7}\
\Longrightarrow x=\frac{3}{5} -\frac{2}{7}\
\Longrightarrow x=\frac{11}{35}\
2) \ ( x-3)^{2} -\frac{1}{9} =0\
\Longrightarrow ( x-3)^{2} =\frac{1}{9}\
\Longrightarrow \left[ \begin{array}{l l}
x-3=\frac{1}{3} & \
x-3=\frac{-1}{3} &
\end{array} ight. \Longrightarrow \left[ \begin{array}{l l}
x=\frac{10}{3} & \
x=\frac{8}{3} &
\end{array} ight.\
3) \ \left| x-\frac{3}{2} ight| -\frac{5}{4} =1\frac{1}{2}\
\Longrightarrow \left| x-\frac{3}{2} ight| =\frac{5}{4} +\frac{3}{2}\
\Longrightarrow \left| x-\frac{3}{2} ight| =\frac{11}{4}\
\Longrightarrow \left[ \begin{array}{l l}
x-\frac{3}{2} =\frac{11}{4} & \
x-\frac{3}{2} =-\frac{11}{4} &
\end{array} ight. \Longrightarrow \left[ \begin{array}{l l}
x=\frac{17}{4} & \
x=\frac{-5}{4} &
\end{array} ight.\
4) \ 0,75-\frac{1}{2} x=\frac{7}{3}\
\Longrightarrow \frac{x}{2} =\frac{-19}{12}\
\Longrightarrow x=\frac{-19}{6}\
5) \ -1\frac{3}{4} -\frac{5}{4} :x=\frac{7}{2}\
\Longrightarrow -\frac{7}{4} -\frac{5}{4} :x=\frac{7}{2}\
\Longrightarrow \frac{5}{4} :x=-\frac{21}{4}\
\Longrightarrow x=\frac{5}{4} :\frac{-21}{4} =\frac{-5}{21}\
6) \ -2\frac{1}{3} +\frac{7}{2} :x=1\frac{1}{3}\
\Longrightarrow \frac{-7}{3} +\frac{7}{2} :x=\frac{4}{3}\
\Longrightarrow \frac{7}{2} :x=\frac{11}{3}\
\Longrightarrow x=\frac{7}{2} :\frac{11}{3} =\frac{21}{22}\
7) \ x+1\frac{1}{5} =\frac{7}{10}\
\Longrightarrow x+\frac{6}{5} =\frac{7}{10}\
\Longrightarrow x=\frac{-1}{2}\
8) \ \left| x-\frac{2}{5} ight| +\frac{3}{4} =\frac{11}{4}\
\Longrightarrow \left| x-\frac{2}{5} ight| =2\
\Longrightarrow \left[ \begin{array}{l l}
x-\frac{2}{5} =2 & \
x-\frac{2}{5} =-2 &
\end{array} ight. \Longrightarrow \left[ \begin{array}{l l}
x=\frac{12}{5} & \
x=\frac{-8}{5} &
\end{array} ight.\
9) \ 2x-\frac{3}{4} =\frac{1}{4}\
\Longrightarrow 2x=1\
\Longrightarrow x=\frac{1}{2}\
10) \ \frac{|x-3|}{5} =\frac{1}{2}\
\Longrightarrow |x-3|=\frac{5}{2}\
\Longrightarrow \left[ \begin{array}{l l}
x-3=\frac{5}{2} & \
x-3=-\frac{5}{2} &
\end{array} ight. \Longrightarrow \left[ \begin{array}{l l}
x=\frac{11}{2} & \
x=\frac{1}{2} &
\end{array} ight.\
11) \ \sqrt{\frac{16}{81}} +x=\frac{13}{9}\
\Longrightarrow \frac{4}{9} +x=\frac{13}{9}\
\Longrightarrow x=1\
12) \ \left| x-\frac{2}{3} ight| =\frac{1}{2}\
\Longrightarrow \left[ \begin{array}{l l}
x-\frac{2}{3} =\frac{1}{2} & \
x-\frac{2}{3} =-\frac{1}{2} &
\end{array} ight. \Longrightarrow \left[ \begin{array}{l l}
x=\frac{7}{6} & \
x=\frac{1}{6} &
\end{array} ight.\
13) \ \frac{5}{7} +\frac{2}{7} :x=0,75\
\Longrightarrow \frac{2}{7} :x=\frac{1}{28}\
\Longrightarrow x=8
\end{array}$