Seudónimo Seudónimo
  • 23-04-2016
  • Mathematics
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Which expression represents 81 decreased by an unknown number

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apologiabiology
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 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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