Liliannna13 Liliannna13

19-09-2016
Mathematics

contestada

Which equation is an identity?
A. 6m-6=7m+9-m
B. 5y+5=5y-6
C. 3w+8-w=4w-2(w-4)
D. 8-(6v+7)=-6v-1

Respuesta :

dalendrk dalendrk

19-09-2016

C. 3w + 8 - w = 4w - 2(w - 4)

(3w - w) + 8 = 4w - 2w -2(-4)

2w + 8 = 2w + 8

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19-09-2016

I think
C. 3w+8-w=4w-2(w-4)

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