Question

Which will solve the equation 12 = n

— ?
9

A Add 12 to both sides.
B Add 9 to both sides.
© Multiply both sides by 12.
D Multiply both sides by 9.

Answer 1

Explanation:

12=12n

We move all terms to the left:

12-(12n)=0

We move all terms containing n to the left, all other terms to the right

-12n=-12

n=-12/-12

n=1