-2r+9=7r

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Solution for -2r+9=7r equation: 



-2r+9=7r

We move all terms to the left:

-2r+9-(7r)=0

We add all the numbers together, and all the variables

-9r+9=0

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

-9r=-9

r=-9/-9

r=1

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