400=r*19.32

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Solution for 400=r*19.32 equation: 



400=r*19.32

We move all terms to the left:

400-(r*19.32)=0

We add all the numbers together, and all the variables

-(+r*19.32)+400=0

We get rid of parentheses

-r*19.32+400=0

Wy multiply elements

-19.32r+400=0

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

-19.32r=-400

r=-400/-19.32

r=20+8.4999999999999/12.075

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