2.9(13.1r-7.2)=7.8

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Solution for 2.9(13.1r-7.2)=7.8 equation: 



2.9(13.1r-7.2)=7.8

We move all terms to the left:

2.9(13.1r-7.2)-(7.8)=0

We add all the numbers together, and all the variables

2.9(13.1r-7.2)-7.8=0

We multiply parentheses

37.7r-20.88-7.8=0

We add all the numbers together, and all the variables

37.7r-28.68=0

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

37.7r=28.68

r=28.68/37.7

r=17.071428571429/22.440476190476

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