r-10=4+8r

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Solution for r-10=4+8r equation: 



r-10=4+8r

We move all terms to the left:

r-10-(4+8r)=0

We add all the numbers together, and all the variables

r-(8r+4)-10=0

We get rid of parentheses

r-8r-4-10=0

We add all the numbers together, and all the variables

-7r-14=0

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

-7r=14

r=14/-7

r=-2

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