12+r/2=1

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Solution for 12+r/2=1 equation: 



12+r/2=1

We move all terms to the left:

12+r/2-(1)=0

We add all the numbers together, and all the variables

r/2+11=0

We multiply all the terms by the denominator


r+11*2=0

We add all the numbers together, and all the variables

r+22=0

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

r=-22

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