2r+12=5r-3

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Solution for 2r+12=5r-3 equation: 



2r+12=5r-3

We move all terms to the left:

2r+12-(5r-3)=0

We get rid of parentheses

2r-5r+3+12=0

We add all the numbers together, and all the variables

-3r+15=0

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

-3r=-15

r=-15/-3

r=+5

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