4r+9=16

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Solution for 4r+9=16 equation: 



4r+9=16

We move all terms to the left:

4r+9-(16)=0

We add all the numbers together, and all the variables

4r-7=0

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

4r=7

r=7/4

r=1+3/4

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