Answer:
he is not correct
Step-by-step explanation:
he didn't evenly distribute the -6 to whats in the parentheses
x=10
8x+10=6x+30
8x-6x=30-10
2x=20
A) 8(x+8); 8*x+8*8
B)15y+2
I hope this helps!
bahaha good point