Question

9+9y=
9y-9=
9(y-1)=
9(y+1)=
9y+1=
1+9y=​

Answer 1

Explanation:

9+9y=18y

9y-9= y

9(y-1)=9y−9 simplifed

9(y+1)=9*1y

9y+1=10y

1+9y=10y

sorry if I got some wrong I tried my best.