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12-02-2016
Mathematics

contestada

What value of s makes the statement true? (–7 + s) + (–14) = (12 + (–7)) + (–14)

A.
–30

B.
–12

C.
–7

D.
12

Respuesta :

12-02-2016

In order to find the answer we can add and subtract all the like terms together.

(-7+s)+(-14)=(12+(-7))+(-14)
(-7+s)+(-14)=(5)+(-14)
(-7+s)=5
s=12

So, the answer MUST be D.

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