Question

Write the English phrase as an algebraic expression. Then simplify the expression. Let x represent the number.

The difference between eight times a number and nine more than seven times the number.
What is the algebraic expression?
(Do not simplify.)

Answer 1

• 8x - (7x + 9)

Explanation:

Let x represent the number.

The expression is built in two parts as:

• The difference between eight times a number (8x) and nine more than seven times the number (7x + 9).

Subtract the second part from the first part:

• 8x - (7x + 9)