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10-02-2016
Mathematics

contestada

solve what is the answer
-2z+3+7z=-12

Respuesta :

Billymkhoi Billymkhoi

10-02-2016

-2z+3+7z=-12
⇒ (-2z+ 7z)+ 3= -12 (combine like terms)
⇒ 5z+ 3= -12
⇒ 5z= -12 -3
⇒ 5z= -15
⇒ z= -15/5
⇒ z= -3

Final answer: z= -3.

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