-12x+8x-21=-5

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Solution for -12x+8x-21=-5 equation: 



-12x+8x-21=-5

We move all terms to the left:

-12x+8x-21-(-5)=0

We add all the numbers together, and all the variables

-4x-16=0

We move all terms containing x to the left, all other terms to the right

-4x=16

x=16/-4

x=-4

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