7(0.5r-0.8)=11.9

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Solution for 7(0.5r-0.8)=11.9 equation: 



7(0.5r-0.8)=11.9

We move all terms to the left:

7(0.5r-0.8)-(11.9)=0

We add all the numbers together, and all the variables

7(0.5r-0.8)-11.9=0

We multiply parentheses

0r-5.6-11.9=0

We add all the numbers together, and all the variables

r-17.5=0

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

r=17.5

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