Question

Twenty-one less than a number is seven. What is the number? 3 14 28 147

Answer 1

28

Explanation:

because twenty eight subtracted by twenty one equals seven

Answer 2

Option C, 28

Explanation:

Step 1: Make an expression

Twenty-one less than a number is 7

`x - 21 = 7`

Step 2: Solve the equation for x

`x - 21 = 7`

`x - 21 + 21 = 7 + 21`

`x = 28`

Answer: Option C, 28