4(-r-7)=-15r-20+10r

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Solution for 4(-r-7)=-15r-20+10r equation: 



4(-r-7)=-15r-20+10r

We move all terms to the left:

4(-r-7)-(-15r-20+10r)=0

We add all the numbers together, and all the variables

4(-1r-7)-(-5r-20)=0

We multiply parentheses

-4r-(-5r-20)-28=0

We get rid of parentheses

-4r+5r+20-28=0

We add all the numbers together, and all the variables

r-8=0

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

r=8

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