-4r+9=45

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Solution for -4r+9=45 equation: 



-4r+9=45

We move all terms to the left:

-4r+9-(45)=0

We add all the numbers together, and all the variables

-4r-36=0

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

-4r=36

r=36/-4

r=-9

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