5r+4r+63=126

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Solution for 5r+4r+63=126 equation: 



5r+4r+63=126

We move all terms to the left:

5r+4r+63-(126)=0

We add all the numbers together, and all the variables

9r-63=0

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

9r=63

r=63/9

r=7

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