bubblz20 bubblz20

12-06-2018
Mathematics

contestada

seven times the difference of a number and 9is equal to 2

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12-06-2018

The number . . . . . N
The difference of the number and 9 . . . N-9
Seven times that difference . . . . . . . 7(N-9)

You said that 7(N-9) = 2 .

Divide each side by 7 : N - 9 = 2/7

Add 9 to each side: N = 9 and 2/7

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