-4+2r=-13+8r-3r

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Solution for -4+2r=-13+8r-3r equation: 



-4+2r=-13+8r-3r

We move all terms to the left:

-4+2r-(-13+8r-3r)=0

We add all the numbers together, and all the variables

2r-(5r-13)-4=0

We get rid of parentheses

2r-5r+13-4=0

We add all the numbers together, and all the variables

-3r+9=0

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

-3r=-9

r=-9/-3

r=+3

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