.2=2.5t/t^2+21=0

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Solution for .2=2.5t/t^2+21=0 equation: 



.2=2.5t/t^2+21=0

We move all terms to the left:

.2-(2.5t/t^2+21)=0



Domain of the equation: t^2+21)!=0

t∈R



We add all the numbers together, and all the variables

-(2.5t/t^2+21)+0.2=0

We get rid of parentheses

-2.5t/t^2-21+0.2=0

We multiply all the terms by the denominator


-2.5t-21*t^2+(0.2)*t^2=0

We add all the numbers together, and all the variables

-21t^2-2.5t+(0.2)*t^2=0

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