Question

Convert the following phrase into a mathematical expression. Use x as the variable and combine like terms Seven times a number, added to the sum of the number and eight

Answer 1

8(x + 1)

Step-by-step explanation:

Variable given to be used = x

Seven times a number ⇒ 7x

The sum of the number and eight ⇒ x + 8

∴ By addition, we have;

7x + (x + 8)

7x + x + 8

Combining like terms yields

8x + 8

By factorisation, we have

8(x + 1)

Hence, the mathematical expression for the phrase is 8(x + 1)