r+3=4r+28

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Solution for r+3=4r+28 equation: 



r+3=4r+28

We move all terms to the left:

r+3-(4r+28)=0

We get rid of parentheses

r-4r-28+3=0

We add all the numbers together, and all the variables

-3r-25=0

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

-3r=25

r=25/-3

r=-8+1/3

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