Question

What is the solution to the equation?

5(8 + 7) = 5 • x + 5 • 7

A.
x = 1

B.
x = 5

C.
x = 7

D.
x = 8

Answer 1

`5(8 + 7) = 5\cdot x + 5 \cdot 7\\ 5\cdot15=5x+35\\ 75=5x+35\\ 5x=40\\ x=8 \Rightarrow D`