shadi8510 shadi8510

28-01-2015
Mathematics

contestada

The quotient of 9 times an unknown number and 16 is 81.

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JamieBoss JamieBoss

28-01-2015

Represent the unknown number with x
9x / 16 = 81
Multiply both sides by 16
9x = 1296
Divide both sides by 9
x = 144

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