4+r=-3r

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Solution for 4+r=-3r equation: 



4+r=-3r

We move all terms to the left:

4+r-(-3r)=0

We get rid of parentheses

r+3r+4=0

We add all the numbers together, and all the variables

4r+4=0

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

4r=-4

r=-4/4

r=-1

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