15+4+4r+7r=5+4r+5r

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Solution for 15+4+4r+7r=5+4r+5r equation: 



15+4+4r+7r=5+4r+5r

We move all terms to the left:

15+4+4r+7r-(5+4r+5r)=0

We add all the numbers together, and all the variables

4r+7r-(9r+5)+15+4=0

We add all the numbers together, and all the variables

11r-(9r+5)+19=0

We get rid of parentheses

11r-9r-5+19=0

We add all the numbers together, and all the variables

2r+14=0

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

2r=-14

r=-14/2

r=-7

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