3x-7=3(2x+1)-x

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Solution for 3x-7=3(2x+1)-x equation: 



3x-7=3(2x+1)-x

We move all terms to the left:

3x-7-(3(2x+1)-x)=0



We calculate terms in parentheses: -(3(2x+1)-x), so:

3(2x+1)-x

We add all the numbers together, and all the variables

-1x+3(2x+1)

We multiply parentheses

-1x+6x+3

We add all the numbers together, and all the variables

5x+3

Back to the equation:

-(5x+3)



We get rid of parentheses

3x-5x-3-7=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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