r*2+9=10r

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Solution for r*2+9=10r equation: 



r*2+9=10r

We move all terms to the left:

r*2+9-(10r)=0

We add all the numbers together, and all the variables

-10r+r*2+9=0

Wy multiply elements

-10r+2r+9=0

We add all the numbers together, and all the variables

-8r+9=0

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

-8r=-9

r=-9/-8

r=1+1/8

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