5r-8=9r-12

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Solution for 5r-8=9r-12 equation: 



5r-8=9r-12

We move all terms to the left:

5r-8-(9r-12)=0

We get rid of parentheses

5r-9r+12-8=0

We add all the numbers together, and all the variables

-4r+4=0

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

-4r=-4

r=-4/-4

r=1

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