8r+3+4r=-7+7r

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Solution for 8r+3+4r=-7+7r equation: 



8r+3+4r=-7+7r

We move all terms to the left:

8r+3+4r-(-7+7r)=0

We add all the numbers together, and all the variables

8r+4r-(7r-7)+3=0

We add all the numbers together, and all the variables

12r-(7r-7)+3=0

We get rid of parentheses

12r-7r+7+3=0

We add all the numbers together, and all the variables

5r+10=0

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

5r=-10

r=-10/5

r=-2

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