Question

Jonny is solving this equation for n : 8 + 3n = 20 . His first step is to subtract 8 from both sides of the equation. Why?

A. He needs to reverse the order of operations.
B. 8 is the first term in the equation.
C. He needs to follow the order of operations.
D. 8 is attached to 3n by subtraction.

The letter are the answer choices by the way

Answer 1

The correct answer is D. 8 is attached to 3n by subtraction.

By subtracting 8 from both sides of the equation, Jonny can isolate the term with the variable, 3n, so that he can solve for n.