6-3(x+1)=7-2x
6-3x-3=7-2x
6-7=3x-2x
-1=x
x=-1\\
8x+3-10x+6=9
-2x=9-6-3
-2x=0
x=0\\
5-x=8(x+2,8)
5-x=8x+22,4
-x-8x=22,4-5
-9x=17,4
x=-29/15
6-3(x+1)=7-2x
6-3x-3=7-2x
6-7=3x-2x
-1=x
x=-1\\
8x+3-10x+6=9
-2x=9-6-3
-2x=0
x=0\\
5-x=8(x+2,8)
5-x=8x+22,4
-x-8x=22,4-5
-9x=17,4
x=-29/15