Question

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

Answer 1

Answer:

Option C, 28

Step-by-step 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

Answer 2

Answer:

28

Step-by-step explanation:

because twenty eight subtracted by twenty one equals seven