4r+13=-15-3r

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Solution for 4r+13=-15-3r equation: 



4r+13=-15-3r

We move all terms to the left:

4r+13-(-15-3r)=0

We add all the numbers together, and all the variables

4r-(-3r-15)+13=0

We get rid of parentheses

4r+3r+15+13=0

We add all the numbers together, and all the variables

7r+28=0

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

7r=-28

r=-28/7

r=-4

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