23=18+r/2

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Solution for 23=18+r/2 equation: 



23=18+r/2

We move all terms to the left:

23-(18+r/2)=0

We add all the numbers together, and all the variables

-(r/2+18)+23=0

We get rid of parentheses

-r/2-18+23=0

We multiply all the terms by the denominator


-r-18*2+23*2=0

We add all the numbers together, and all the variables

-1r+10=0

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

-r=-10

r=-10/-1

r=+10

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