D=4.2r+32

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Solution for D=4.2r+32 equation: 



=4.2D+32

We move all terms to the left:

-(4.2D+32)=0

We get rid of parentheses

-4.2D-32=0

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

-4.2D=32

D=32/-4.2

D=-7+1/1.6153846153846

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