5r-9=3(r-7)

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Solution for 5r-9=3(r-7) equation: 



5r-9=3(r-7)

We move all terms to the left:

5r-9-(3(r-7))=0



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

3(r-7)

We multiply parentheses

3r-21

Back to the equation:

-(3r-21)



We get rid of parentheses

5r-3r+21-9=0

We add all the numbers together, and all the variables

2r+12=0

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

2r=-12

r=-12/2

r=-6

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