2r+8r=63+r

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Solution for 2r+8r=63+r equation: 



2r+8r=63+r

We move all terms to the left:

2r+8r-(63+r)=0

We add all the numbers together, and all the variables

2r+8r-(r+63)=0

We add all the numbers together, and all the variables

10r-(r+63)=0

We get rid of parentheses

10r-r-63=0

We add all the numbers together, and all the variables

9r-63=0

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

9r=63

r=63/9

r=7

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