15+x+5x=45+12x-4x

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Solution for 15+x+5x=45+12x-4x equation: 



15+x+5x=45+12x-4x

We move all terms to the left:

15+x+5x-(45+12x-4x)=0

We add all the numbers together, and all the variables

x+5x-(8x+45)+15=0

We add all the numbers together, and all the variables

6x-(8x+45)+15=0

We get rid of parentheses

6x-8x-45+15=0

We add all the numbers together, and all the variables

-2x-30=0

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

-2x=30

x=30/-2

x=-15

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