(2-3)r=3

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Solution for (2-3)r=3 equation: 



(2-3)r=3

We move all terms to the left:

(2-3)r-(3)=0

We add all the numbers together, and all the variables

(-1)r-3=0

We multiply parentheses

-1r-3=0

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

-r=3

r=3/-1

r=-3

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