purple7185 purple7185

13-12-2017
Mathematics

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Twice the difference of a number and 7 is 9

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pepsi9897 pepsi9897

13-12-2017

So you know 2(x-7)=9 so solve for x 9/2=x-7 add 7 and x=23/2
(or 11 and 1/2 if you change to whole numbers)

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