2r+3r-4r=9

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Solution for 2r+3r-4r=9 equation: 



2r+3r-4r=9

We move all terms to the left:

2r+3r-4r-(9)=0

We add all the numbers together, and all the variables

r-9=0

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

r=9

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