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19-09-2020
Mathematics

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twice the difference of a number and 2 is 9

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officialstephhk officialstephhk

19-09-2020

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

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