kidfree3 kidfree3

20-09-2017
Mathematics

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1/3 of a number is 12 less than the number itself

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greymek15 greymek15

20-09-2017

Let "x" be a substitute for "a number"

1/3(x)=x-12 Multiply by 3
x=3x-36 Get n onto the same side of the equation
2x=36 Divide by 2
x=18

That's your answer.

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