5r+7r=r-8+7r-16

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Solution for 5r+7r=r-8+7r-16 equation: 



5r+7r=r-8+7r-16

We move all terms to the left:

5r+7r-(r-8+7r-16)=0

We add all the numbers together, and all the variables

5r+7r-(8r-24)=0

We add all the numbers together, and all the variables

12r-(8r-24)=0

We get rid of parentheses

12r-8r+24=0

We add all the numbers together, and all the variables

4r+24=0

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

4r=-24

r=-24/4

r=-6

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