2x+7-5x+8=3(5+6x)-12

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Solution for 2x+7-5x+8=3(5+6x)-12 equation: 



2x+7-5x+8=3(5+6x)-12

We move all terms to the left:

2x+7-5x+8-(3(5+6x)-12)=0

We add all the numbers together, and all the variables

2x-5x-(3(6x+5)-12)+7+8=0

We add all the numbers together, and all the variables

-3x-(3(6x+5)-12)+15=0



We calculate terms in parentheses: -(3(6x+5)-12), so:

3(6x+5)-12

We multiply parentheses

18x+15-12

We add all the numbers together, and all the variables

18x+3

Back to the equation:

-(18x+3)



We get rid of parentheses

-3x-18x-3+15=0

We add all the numbers together, and all the variables

-21x+12=0

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

-21x=-12

x=-12/-21

x=4/7

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