3-5r+9=12-4

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Solution for 3-5r+9=12-4 equation: 



3-5r+9=12-4

We move all terms to the left:

3-5r+9-(12-4)=0

We add all the numbers together, and all the variables

-5r+3+9-8=0

We add all the numbers together, and all the variables

-5r+4=0

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

-5r=-4

r=-4/-5

r=4/5

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