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

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



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

We move all terms to the left:

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



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

7(2r+3)

We multiply parentheses

14r+21

Back to the equation:

-(14r+21)



We get rid of parentheses

7r-14r-21-7=0

We add all the numbers together, and all the variables

-7r-28=0

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

-7r=28

r=28/-7

r=-4

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