7x+2x=-15+4x+8x

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Solution for 7x+2x=-15+4x+8x equation: 



7x+2x=-15+4x+8x

We move all terms to the left:

7x+2x-(-15+4x+8x)=0

We add all the numbers together, and all the variables

7x+2x-(12x-15)=0

We add all the numbers together, and all the variables

9x-(12x-15)=0

We get rid of parentheses

9x-12x+15=0

We add all the numbers together, and all the variables

-3x+15=0

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

-3x=-15

x=-15/-3

x=+5

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