purple7185
purple7185
13-12-2017
Mathematics
contestada
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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