Question

Your friend secretly chooses a number. She says that when you divide the number by 4, add 6, and then multiply by -3, the result is -27. What number did your friend choose?

Answer 1

Answer: 12

Explanation:

Say that your friends number is x

She says that when you divide the number by 4, add 6, and then multiply by -3, the result is -27, so:

(x/4 + 6) * -3 = -27

We can solve the equation by first dividing by -3 on both sides:

x/4 + 6 = 9

Multiply both sides by 4:

x + 24 = 36

Subtract 24 from both sides:

x = 12

Double checking...

(12/4 + 6) * -3

= (3+6) * -3

= 9 * -3

= -27

Correct :>

So your friend chose the number 12