-1+9r=10r

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Solution for -1+9r=10r equation:



-1+9r=10r
We move all terms to the left:
-1+9r-(10r)=0
We add all the numbers together, and all the variables
-1r-1=0
We move all terms containing r to the left, all other terms to the right
-r=1
r=1/-1
r=-1

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