3(x-7)-(9-2x)=2(12-x)-(x-10)
3x – 21 – 9 + 2x = 24 – 2x – x + 10
3x + 2x + 2x + x = 10 + 24 + 9 + 21
8x = 64
x = 8
3(x-7)-(9-2x)=2(12-x)-(x-10)
3x – 21 – 9 + 2x = 24 – 2x – x + 10
3x + 2x + 2x + x = 10 + 24 + 9 + 21
8x = 64
x = 8