9(2r+2)=4(5r-1)

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Solution for 9(2r+2)=4(5r-1) equation: 



9(2r+2)=4(5r-1)

We move all terms to the left:

9(2r+2)-(4(5r-1))=0

We multiply parentheses

18r-(4(5r-1))+18=0



We calculate terms in parentheses: -(4(5r-1)), so:

4(5r-1)

We multiply parentheses

20r-4

Back to the equation:

-(20r-4)



We get rid of parentheses

18r-20r+4+18=0

We add all the numbers together, and all the variables

-2r+22=0

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

-2r=-22

r=-22/-2

r=+11

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