3(r+1.6)-8r=9.2

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Solution for 3(r+1.6)-8r=9.2 equation: 



3(r+1.6)-8r=9.2

We move all terms to the left:

3(r+1.6)-8r-(9.2)=0

We add all the numbers together, and all the variables

-8r+3(r+1.6)-9.2=0

We multiply parentheses

-8r+3r+4.8-9.2=0

We add all the numbers together, and all the variables

-5r-4.4=0

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

-5r=4.4

r=4.4/-5

r=-3.1428571428571/3.5714285714286

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