3r+3=19-r

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Solution for 3r+3=19-r equation: 



3r+3=19-r

We move all terms to the left:

3r+3-(19-r)=0

We add all the numbers together, and all the variables

3r-(-1r+19)+3=0

We get rid of parentheses

3r+1r-19+3=0

We add all the numbers together, and all the variables

4r-16=0

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

4r=16

r=16/4

r=4

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