Question

Mr. Inderhees wrote an equation and the first step of his solution process, as shown.

​15 = −5 +4x
20 = 4x

​Which math operation did Mr. Inderhees apply in his first step?
A. He divided 15 by 5.
B. He added 5 to each side of the equation.
C. He divided each side of the equation by 5.
D. He subtracted 5 from each side of the equation.

Answer 1

B. He added 5 to each side of the equation.

Explanation:

B. He added 5 to each side of the equation.