Question

Liu chose an integer. She added 3. Then, she multiplied the sum by -7. The answer was 84. What integer did Liu choose?

Answer 1

Explanation:

let the integer be x

(x+3) -7 =84

-7x-21=84

-7x=84+21

-7x=105

divide both sides by -7

x= -15

Answer 2

-15

Explanation:

let the integer be x.

-7(x+3)=84