(3*30)*(8-8)=r

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Solution for (3*30)*(8-8)=r equation: 



(3*30)(8-8)=r

We move all terms to the left:

(3*30)(8-8)-(r)=0

We add all the numbers together, and all the variables

-r+900=0

We add all the numbers together, and all the variables

-1r+900=0

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

-r=-900

r=-900/-1

r=+900

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