Question

Translate the sentence into an equation.

Twice the difference of a number and 2 is 9.
Use the variable w for the unknown number.

Answer 1

2(w-2) = 9

Explanation:

Check:

2w - 4 = 9

2w = 13

w = 6.5

2(6.5 - 2) = 9

2(4.5) = 9

9 = 9