20r-2r-15r-r=2

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Solution for 20r-2r-15r-r=2 equation: 



20r-2r-15r-r=2

We move all terms to the left:

20r-2r-15r-r-(2)=0

We add all the numbers together, and all the variables

2r-2=0

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

2r=2

r=2/2

r=1

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