Seudónimo Seudónimo

23-04-2016
Mathematics

contestada

Which expression represents 81 decreased by an unknown number

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apologiabiology apologiabiology

23-04-2016

unknown number is x decreased by x means minus x means -x 81 decreased by x means 81-x

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BossLife123 BossLife123

23-04-2016

Hi there!

So, we have to write a expression.

decrease means - and an unknown number is x.

Therefore, the expression is 81-x

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