4(3r-7)=8(3r-20)

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Solution for 4(3r-7)=8(3r-20) equation: 



4(3r-7)=8(3r-20)

We move all terms to the left:

4(3r-7)-(8(3r-20))=0

We multiply parentheses

12r-(8(3r-20))-28=0



We calculate terms in parentheses: -(8(3r-20)), so:

8(3r-20)

We multiply parentheses

24r-160

Back to the equation:

-(24r-160)



We get rid of parentheses

12r-24r+160-28=0

We add all the numbers together, and all the variables

-12r+132=0

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

-12r=-132

r=-132/-12

r=+11

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