Question

What value correctly fills in the blank so that the expressions are equivalent?

18 + 45 = x (2+5)
2
3
7
9

Answer 1

Answer: X = 9

Explanation:

Multiply x all in the expression and then combine like terms, add the two terms together on the left side and you are left with

63 = 7x

divide 63 by x to get x alone to get x = 9