4r-10=30

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Solution for 4r-10=30 equation: 



4r-10=30

We move all terms to the left:

4r-10-(30)=0

We add all the numbers together, and all the variables

4r-40=0

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

4r=40

r=40/4

r=10

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