-18=5-r/2

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Solution for -18=5-r/2 equation: 



-18=5-r/2

We move all terms to the left:

-18-(5-r/2)=0

We add all the numbers together, and all the variables

-(-r/2+5)-18=0

We get rid of parentheses

r/2-5-18=0

We multiply all the terms by the denominator


r-5*2-18*2=0

We add all the numbers together, and all the variables

r-46=0

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

r=46

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