Question

1) 9-5(x+1)=4+x
2)13,7-2,2x=1,5x+2,6
3)8-3x=4(x-1)=(x-6)

Answer 1

1.
9-5x-5=4+x
-5x=4-9+5
-5x=0
x=0
2.
-2,2x-1,5x=2,6-13,7
-3,7x=-11,1
x=3