Question

Solve the problem. Give the equation using x as the variable, and give the answer.

The product of 9, and a number increased by 6, is 135. What is the number?
The equation is
(Do not simplify.)

Answer 1

9x + 6 = 135 is our equation. Any time there is an integer followed by “a number,” we know that is representative of a variable that forms a coefficient.

Upon division, x = 43/3. Why? Well, 9x has to equal 129 since 129 + 6 = 135. 9 does not directly go into 129, and so we know our product isn’t a whole number.