R=-10/21c+9

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Solution for R=-10/21c+9 equation: 



=-10/21R+9

We move all terms to the left:

-(-10/21R+9)=0



Domain of the equation: 21R+9)!=0

R∈R



We get rid of parentheses

10/21R-9=0

We multiply all the terms by the denominator


-9*21R+10=0

Wy multiply elements

-189R+10=0

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

-189R=-10

R=-10/-189

R=10/189

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