D(x)=50-0.5x

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Solution for D(x)=50-0.5x equation: 



(D)=50-0.5D

We move all terms to the left:

(D)-(50-0.5D)=0

We add all the numbers together, and all the variables

D-(-0.5D+50)=0

We get rid of parentheses

D+0.5D-50=0

We add all the numbers together, and all the variables

1.5D-50=0

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

1.5D=50

D=50/1.5

D=33+0.5/1.5

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