-10r-3.72+9r=-0.4r-0.18

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Solution for -10r-3.72+9r=-0.4r-0.18 equation: 



-10r-3.72+9r=-0.4r-0.18

We move all terms to the left:

-10r-3.72+9r-(-0.4r-0.18)=0

We add all the numbers together, and all the variables

-1r-(-0.4r-0.18)-3.72=0

We get rid of parentheses

-1r+0.4r+0.18-3.72=0

We add all the numbers together, and all the variables

-0.6r-3.54=0

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

-0.6r=3.54

r=3.54/-0.6

r=-5+0.54/0.6

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