-4+2r=16-4r+8r

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Solution for -4+2r=16-4r+8r equation: 



-4+2r=16-4r+8r

We move all terms to the left:

-4+2r-(16-4r+8r)=0

We add all the numbers together, and all the variables

2r-(4r+16)-4=0

We get rid of parentheses

2r-4r-16-4=0

We add all the numbers together, and all the variables

-2r-20=0

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

-2r=20

r=20/-2

r=-10

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