4r-1-2r+5=12

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Solution for 4r-1-2r+5=12 equation: 



4r-1-2r+5=12

We move all terms to the left:

4r-1-2r+5-(12)=0

We add all the numbers together, and all the variables

2r-8=0

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

2r=8

r=8/2

r=4

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