Respuesta :

a+(−5)=−12

a−5=−12

a = -12 + 5

a = -7

answer is b. a=−7

jodeelhyn
a+(-5)=-12 ...positive (+) and negative (-) make a negative (-)
a-5=-12 ...move -5 to the other side using addition
a-5+5=12+5
a=17

The answer is the fourth choice, d. a=17.

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