11r-9r-1r=4

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Solution for 11r-9r-1r=4 equation: 



11r-9r-1r=4

We move all terms to the left:

11r-9r-1r-(4)=0

We add all the numbers together, and all the variables

r-4=0

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

r=4

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