3r-18=4r

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Solution for 3r-18=4r equation: 



3r-18=4r

We move all terms to the left:

3r-18-(4r)=0

We add all the numbers together, and all the variables

-1r-18=0

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

-r=18

r=18/-1

r=-18

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