dariusjones78 dariusjones78

16-11-2021
Mathematics

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Which expression represents 81 decreased by an unknown number?

81÷a

81a

81−a

81 + a

Respuesta :

Аноним Аноним

16-11-2021

Answer:

81 - a

Step-by-step explanation:

Decreased

means to subtract

81 –

by an unknown number

means a variable such as a or x

therefor

81 – a

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