Question

Twice the difference of a number and 2 is 9
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Answer 1

The difference of a number and 2: x-2

Twice the difference of a number and 2: 2(x-2)

Is 9.

2(x-2) = 9

2x - 4 = 9

2x = 13

x = 13/2 = 6 1/2