7(5r-4)=-20+9r

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Solution for 7(5r-4)=-20+9r equation: 



7(5r-4)=-20+9r

We move all terms to the left:

7(5r-4)-(-20+9r)=0

We add all the numbers together, and all the variables

7(5r-4)-(9r-20)=0

We multiply parentheses

35r-(9r-20)-28=0

We get rid of parentheses

35r-9r+20-28=0

We add all the numbers together, and all the variables

26r-8=0

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

26r=8

r=8/26

r=4/13

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