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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

9x-(7x-7)+3=0

We get rid of parentheses

9x-7x+7+3=0

We add all the numbers together, and all the variables

2x+10=0

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

2x=-10

x=-10/2

x=-5

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