12x+13=77-4x

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Solution for 12x+13=77-4x equation: 



12x+13=77-4x

We move all terms to the left:

12x+13-(77-4x)=0

We add all the numbers together, and all the variables

12x-(-4x+77)+13=0

We get rid of parentheses

12x+4x-77+13=0

We add all the numbers together, and all the variables

16x-64=0

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

16x=64

x=64/16

x=4

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