-10=r+2-4r

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Solution for -10=r+2-4r equation: 



-10=r+2-4r

We move all terms to the left:

-10-(r+2-4r)=0

We add all the numbers together, and all the variables

-(-3r+2)-10=0

We get rid of parentheses

3r-2-10=0

We add all the numbers together, and all the variables

3r-12=0

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

3r=12

r=12/3

r=4

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