8r+20=7+5r

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Solution for 8r+20=7+5r equation: 



8r+20=7+5r

We move all terms to the left:

8r+20-(7+5r)=0

We add all the numbers together, and all the variables

8r-(5r+7)+20=0

We get rid of parentheses

8r-5r-7+20=0

We add all the numbers together, and all the variables

3r+13=0

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

3r=-13

r=-13/3

r=-4+1/3

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