Question

The sum of twice a number and 12 less than the number is the same as the as the difference between -28 and the number. What is the number?

Answer 1

twice a number: 2x
12 less than the number: x-12
sum of twice a number and 12 less than the number: 2x + x - 12
difference between -28 and the number: -28 - x

those two are equal: 2x + x - 12 = -28 - x

Answer 2

have to read what is there, not what you expect to be there :-)

Answer 3

Oh.. -28 MINUS x...yeah there we go... haha. ty!

Answer 4

idk if this is right but I keep getting 40

Answer 5

well, let's check it out.

2x 40 = 80
12 less 40 = -28
sum of those two is 80-28 = 52
difference between -28 and 40 = -28-40 = -68
-68 = 52
oops.

Answer 6

Hint: the answer is a negative number..

Answer 7

2x + x -12 = -28 - x

3x - 12 = -28 - x

3x + x = -28 + 12

4x = -16

x = ?

Answer 8

-4

Answer 9

thanks @whpalmer4 :)

Answer 10

@kimbradunn let's check:

twice the number: 2*-4 = -8
12 less than -4 = -8-12 = -16
sum of those two: -24
difference between -28 and -4 : -28 - (-4) = -28 + 4 = -24
good job!

Answer 11

thanks everyone!!!