10r/2-10=30

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Solution for 10r/2-10=30 equation: 



10r/2-10=30

We move all terms to the left:

10r/2-10-(30)=0

We add all the numbers together, and all the variables

10r/2-40=0

We multiply all the terms by the denominator


10r-40*2=0

We add all the numbers together, and all the variables

10r-80=0

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

10r=80

r=80/10

r=8

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