Solve for d
d=-\frac{n}{200}+0.55
Solve for n
n=110-200d
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10d=5.5-0.05n
Subtract 0.05n from both sides.
10d=-\frac{n}{20}+5.5
The equation is in standard form.
\frac{10d}{10}=\frac{-\frac{n}{20}+5.5}{10}
Divide both sides by 10.
d=\frac{-\frac{n}{20}+5.5}{10}
Dividing by 10 undoes the multiplication by 10.
d=-\frac{n}{200}+\frac{11}{20}
Divide 5.5-\frac{n}{20} by 10.
0.05n=5.5-10d
Subtract 10d from both sides.
\frac{0.05n}{0.05}=\frac{5.5-10d}{0.05}
Multiply both sides by 20.
n=\frac{5.5-10d}{0.05}
Dividing by 0.05 undoes the multiplication by 0.05.
n=110-200d
Divide 5.5-10d by 0.05 by multiplying 5.5-10d by the reciprocal of 0.05.
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