-7+9r=10r

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Solution for -7+9r=10r equation: 



-7+9r=10r

We move all terms to the left:

-7+9r-(10r)=0

We add all the numbers together, and all the variables

-1r-7=0

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

-r=7

r=7/-1

r=-7

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