Giải chi tiết bài toán trong ảnh giúp tôi Dạng 3.,Bài 1: Tìm x biết:,$1)~13+(x-6)=15$ $2)~25+(-2+x)=5$ $3)~30+(32-x)=10$,$4)~-30+(25-x)=-1$ $5)~5-(4-x)=6$ $6)~-26-(x-7)=0$,$7)~24-(30+x)=-7$ $8)~3-(17-x)=-12$ $9)~(5-x)-7=-15$,$10)~517-(x-124)=-483$ $11)117-(x+5)=26+(-9)$

Question

Accepted Answer

Bài 1:
1) $13 + (x - 6) = 15$
   $(x - 6) = 15 - 13$
   $(x - 6) = 2$
   $x = 2 + 6$
   $x = 8$

2) $25 + (-2 + x) = 5$
   $(-2 + x) = 5 - 25$
   $(-2 + x) = -20$
   $x = -20 + 2$
   $x = -18$

3) $30 + (32 - x) = 10$
   $(32 - x) = 10 - 30$
   $(32 - x) = -20$
   $x = 32 + 20$
   $x = 52$

4) $-30 + (25 - x) = -1$
   $(25 - x) = -1 + 30$
   $(25 - x) = 29$
   $x = 25 - 29$
   $x = -4$

5) $5 - (4 - x) = 6$
   $(4 - x) = 5 - 6$
   $(4 - x) = -1$
   $x = 4 + 1$
   $x = 5$

6) $-26 - (x - 7) = 0$
   $(x - 7) = -26$
   $x = -26 + 7$
   $x = -19$

7) $24 - (30 + x) = -7$
   $(30 + x) = 24 + 7$
   $(30 + x) = 31$
   $x = 31 - 30$
   $x = 1$

8) $3 - (17 - x) = -12$
   $(17 - x) = 3 + 12$
   $(17 - x) = 15$
   $x = 17 - 15$
   $x = 2$

9) $(5 - x) - 7 = -15$
   $(5 - x) = -15 + 7$
   $(5 - x) = -8$
   $x = 5 + 8$
   $x = 13$

10) $517 - (x - 124) = -483$
    $(x - 124) = 517 + 483$
    $(x - 124) = 1000$
    $x = 1000 + 124$
    $x = 1124$

11) $117 - (x + 5) = 26 + (-9)$
    $117 - (x + 5) = 17$
    $(x + 5) = 117 - 17$
    $(x + 5) = 100$
    $x = 100 - 5$
    $x = 95$

Đáp số:
1) $x = 8$
2) $x = -18$
3) $x = 52$
4) $x = -4$
5) $x = 5$
6) $x = -19$
7) $x = 1$
8) $x = 2$
9) $x = 13$
10) $x = 1124$
11) $x = 95$