0.4+6.5r+2.1=11.6

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Solution for 0.4+6.5r+2.1=11.6 equation: 



0.4+6.5r+2.1=11.6

We move all terms to the left:

0.4+6.5r+2.1-(11.6)=0

We add all the numbers together, and all the variables

6.5r-9.1=0

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

6.5r=9.1

r=9.1/6.5

r=1+1/2.5

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