r-3/8=12

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Solution for r-3/8=12 equation: 



r-3/8=12

We move all terms to the left:

r-3/8-(12)=0

determiningTheFunctionDomain
r-12-3/8=0

We multiply all the terms by the denominator


r*8-3-12*8=0

We add all the numbers together, and all the variables

r*8-99=0

Wy multiply elements

8r-99=0

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

8r=99

r=99/8

r=12+3/8

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