1+r/2=9

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Solution for 1+r/2=9 equation: 



1+r/2=9

We move all terms to the left:

1+r/2-(9)=0

We add all the numbers together, and all the variables

r/2-8=0

We multiply all the terms by the denominator


r-8*2=0

We add all the numbers together, and all the variables

r-16=0

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

r=16

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