-4r+7r-3+5r=12-7

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Solution for -4r+7r-3+5r=12-7 equation: 



-4r+7r-3+5r=12-7

We move all terms to the left:

-4r+7r-3+5r-(12-7)=0

We add all the numbers together, and all the variables

-4r+7r+5r-3-5=0

We add all the numbers together, and all the variables

8r-8=0

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

8r=8

r=8/8

r=1

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