7 x-[4 x-3(x-1)]=x+2
7 x-[4 x-3 x+3]=x+2
7 x-(x+3)=x+2
7 x-x-3=x+2
6x-3=x+2
5 x-3=2
5x=5
x=1
![7 x-[4 x-3(x-1)]=x+2 7 x-[4 x-3 x+3]=x+2 7 x-(x+3)=x+2 7 x-x-3=x+2 6x-3=x+2 5 x-3=2 5x=5 x=1 class=](https://us-static.z-dn.net/files/daf/f43ae29fddca3f77a3c524ae133e20ac.jpg)