20+r+8=-7r-20

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Solution for 20+r+8=-7r-20 equation: 



20+r+8=-7r-20

We move all terms to the left:

20+r+8-(-7r-20)=0

We add all the numbers together, and all the variables

r-(-7r-20)+28=0

We get rid of parentheses

r+7r+20+28=0

We add all the numbers together, and all the variables

8r+48=0

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

8r=-48

r=-48/8

r=-6

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