12r+16-20=3-5r

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Solution for 12r+16-20=3-5r equation: 



12r+16-20=3-5r

We move all terms to the left:

12r+16-20-(3-5r)=0

We add all the numbers together, and all the variables

12r-(-5r+3)+16-20=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

12r+5r-3-4=0

We add all the numbers together, and all the variables

17r-7=0

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

17r=7

r=7/17

r=7/17

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