(x+5)+(3x+4)=(x-7)+4

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Solution for (x+5)+(3x+4)=(x-7)+4 equation: 



(x+5)+(3x+4)=(x-7)+4

We move all terms to the left:

(x+5)+(3x+4)-((x-7)+4)=0

We get rid of parentheses

x+3x-((x-7)+4)+5+4=0



We calculate terms in parentheses: -((x-7)+4), so:

(x-7)+4

We get rid of parentheses

x-7+4

We add all the numbers together, and all the variables

x-3

Back to the equation:

-(x-3)



We add all the numbers together, and all the variables

4x-(x-3)+9=0

We get rid of parentheses

4x-x+3+9=0

We add all the numbers together, and all the variables

3x+12=0

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

3x=-12

x=-12/3

x=-4

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