A.)- check box 1,4
B.) check box 2, 3
A.)- 9x-2x+5x= 12x.
So first box is 7x + 5x, which is 12. 4th box is 12x, and 12x=12x.
B.)- 8(1+6y). You must distribute. 8*1 is 8, 8*6 is 48. so B is 8+48y.
2 box is literally 8+48y, and 3rd box is 8+48y before simplification. Hope this helps!