r+4=19-2r

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Solution for r+4=19-2r equation: 



r+4=19-2r

We move all terms to the left:

r+4-(19-2r)=0

We add all the numbers together, and all the variables

r-(-2r+19)+4=0

We get rid of parentheses

r+2r-19+4=0

We add all the numbers together, and all the variables

3r-15=0

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

3r=15

r=15/3

r=5

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