Question

.

Answer 1

add 18
divide by 2

Answer 2

2x-18=72
2x=72=18
2x=90
x= 45

Answer 3

yes

Answer 4

then divide by 2

Answer 5

@forev_sparkles wrote the steps out above

Answer 6

when you add 18 you get
2x = 90
dividing by 2 gives
x = 45

Answer 7

2x divided by 2 is x

Answer 8

yup

Answer 9

sure, or @forev_sparkles will