9r-4=10r

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Solution for 9r-4=10r equation: 



9r-4=10r

We move all terms to the left:

9r-4-(10r)=0

We add all the numbers together, and all the variables

-1r-4=0

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

-r=4

r=4/-1

r=-4

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