4(9+r)=108

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Solution for 4(9+r)=108 equation:



4(9+r)=108
We move all terms to the left:
4(9+r)-(108)=0
We add all the numbers together, and all the variables
4(r+9)-108=0
We multiply parentheses
4r+36-108=0
We add all the numbers together, and all the variables
4r-72=0
We move all terms containing r to the left, all other terms to the right
4r=72
r=72/4
r=18

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