Question

8-3(a-1)=3+a

Answer 1

-3(a-1)=-3a+3 using distribution
8-3a+3=3+a
8+3-3a=3+a
11-3a=3+a

-3 -3 subtracting 3 on both sides

8-3a=a

+3a +3a adding 3a on both sides

8=4a


- -
4 4 dividing 4 on both sides



2=1a

2=a

a=2