-4=-2r+16

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



-4=-2r+16

We move all terms to the left:

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

We get rid of parentheses

2r-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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