Respuesta :

GalacticKitten
Plug 129 for x
(-12 x 129)+(14 x 129)-(6 x 129)
Which would be -1548+1806-774
Which equals -516
igoroleshko156

Answer:

-516

Step-by-step explanation:

Way #1

Step 1:  Plug in x into the equation

-12(129) + 14(129) - 6(129)

-1548 + 1806 - 774

-516

Answer:  -516

Way #2

Step 1:  Or the other way is to simply the equation then plug x in.

-12(x) + 14(x) - 6(x)

-18x + 14x

-4x

Step 2:  Then plug in x

-4(129)

-516

Answer:  -516

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