7x+-12=(x+3)+(x+4)

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Solution for 7x+-12=(x+3)+(x+4) equation: 



7x+-12=(x+3)+(x+4)

We move all terms to the left:

7x+-12-((x+3)+(x+4))=0

We add all the numbers together, and all the variables

7x-((x+3)+(x+4))=0



We calculate terms in parentheses: -((x+3)+(x+4)), so:

(x+3)+(x+4)

We get rid of parentheses

x+x+3+4

We add all the numbers together, and all the variables

2x+7

Back to the equation:

-(2x+7)



We get rid of parentheses

7x-2x-7=0

We add all the numbers together, and all the variables

5x-7=0

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

5x=7

x=7/5

x=1+2/5

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