2(x-4) +2x=7-(x-1)
2x-8+2x=7-x+1
4x+x=7+1+8
5x=16
x=16\5
2(x-4)-2x=7-(x-1)
2x-8-2x=7-x+1
2x-2x+x=7+1+8
x=16