3x+5+7=7x-3

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



3x+5+7=7x-3

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

3x-7x+3+12=0

We add all the numbers together, and all the variables

-4x+15=0

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

-4x=-15

x=-15/-4

x=3+3/4

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