Question

3(x-7)-(9-2x) = 2(12-x)-(x-10)
подробный ответ

Answer 1

$3x-21-9+2x=24-2x-x+10\5x-30=-3x+34\8x=64\x=8$

Answer 2

3× -21-9+2×= 24-2×-×+10
3×+2×+2×+× = 24+10+21+9
8× = 64
×= 8
Ответ: 8