D
they need to equal 77
(x+5) is for the additional 5 to only one x
x + (x+5) is because you don’t need to multiply the two x because that answer would end up much higher ex: 5+5=10 but 5(5)=25
if you need to solve,
x+(x+5)=77
-5
2x=72 (you’re left with 2 of the same x so they can be combined to just have 2x)
divide by 2
x=36
