4r-3r+9r=(-10)

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Solution for 4r-3r+9r=(-10) equation: 



4r-3r+9r=(-10)

We move all terms to the left:

4r-3r+9r-((-10))=0

We add all the numbers together, and all the variables

10r+10=0

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

10r=-10

r=-10/10

r=-1

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