-21x-8+5x=4x+12

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Solution for -21x-8+5x=4x+12 equation: 



-21x-8+5x=4x+12

We move all terms to the left:

-21x-8+5x-(4x+12)=0

We add all the numbers together, and all the variables

-16x-(4x+12)-8=0

We get rid of parentheses

-16x-4x-12-8=0

We add all the numbers together, and all the variables

-20x-20=0

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

-20x=20

x=20/-20

x=-1

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