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Which expression represents 81 decreased by an unknown number
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Which expression represents 81 decreased by an unknown number

User Takoyaro
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2 Answers

1 vote
Hi there!

So, we have to write a expression.

decrease means - and an unknown number is x.

Therefore, the expression is 81-x
User Elliott Davies
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8.5k points
5 votes
unknown number is x decreased by x means minus x means -x 81 decreased by x means 81-x
User Ankit Rawat
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