5r+2r+2r+r-9r=4

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Solution for 5r+2r+2r+r-9r=4 equation: 



5r+2r+2r+r-9r=4

We move all terms to the left:

5r+2r+2r+r-9r-(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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