Respuesta :

Hello from MrBillDoesMath!

Answer:

-3

Discussion:

Call the number "n". Then

(n+7) * 5 = 20              =>                (given)

(n+7) = 20 * (1/5)  = 4  =>                 (divide both sides by 5)

n = 4 - 7  = -3                                   (subtract 7 from both sides)


Regards,  

MrB


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