3(-r+2)-7r=3(7r+2)

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



3(-r+2)-7r=3(7r+2)

We move all terms to the left:

3(-r+2)-7r-(3(7r+2))=0

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-7r-3r-(3(7r+2))+6=0



We calculate terms in parentheses: -(3(7r+2)), so:

3(7r+2)

We multiply parentheses

21r+6

Back to the equation:

-(21r+6)



We add all the numbers together, and all the variables

-10r-(21r+6)+6=0

We get rid of parentheses

-10r-21r-6+6=0

We add all the numbers together, and all the variables

-31r=0

r=0/-31

r=0

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