4r-3=9r-12

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Solution for 4r-3=9r-12 equation: 



4r-3=9r-12

We move all terms to the left:

4r-3-(9r-12)=0

We get rid of parentheses

4r-9r+12-3=0

We add all the numbers together, and all the variables

-5r+9=0

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

-5r=-9

r=-9/-5

r=1+4/5

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