Twice the difference of a number and 3 equals 8

Question



Answer 1

"Difference" means subtraction of a number "x" and the number 3 -> x-3

"Twice" means multiplication by 2 of the difference of x and 3 -> 2(x-3)

"Equals" 8 ->

2(x - 3) = 8 Distribute the 2

2(x) - 2(3) = 8

2x - 6 = 8 Add 6 to both sides

2x = 14 Divide both sides by 2

x = 7

Answer 2

Hi, McKenzie.

Twice the difference of a number (n) and 3 equals 8.

2 x (n-3) = 8

or

2(n-3) = 8

2n - 6 = 8

2n = 14

2n/2 = 14/2

n = 7