3x+4=7x-x-17

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Solution for 3x+4=7x-x-17 equation: 



3x+4=7x-x-17

We move all terms to the left:

3x+4-(7x-x-17)=0

We add all the numbers together, and all the variables

3x-(6x-17)+4=0

We get rid of parentheses

3x-6x+17+4=0

We add all the numbers together, and all the variables

-3x+21=0

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

-3x=-21

x=-21/-3

x=+7

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