Question

Two times the difference of 13

and a number is -4. Write an
equation representing this
situation and solve for the
number.

Answer 1

Explanation:

let number be x

CASE 1) when x>13

2(x-13) = 4

2x - 26 = 4

2x = 30

x = 15

CASE 2) when x<13

2(13 - x) = 4

26 - 2x = 4

26 - 4 = 2x

22 = 2x

11 = x