Solve for x
x=-\frac{B}{18}+\frac{5}{2}
Solve for B
B=45-18x
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45-18x=B
Swap sides so that all variable terms are on the left hand side.
-18x=B-45
Subtract 45 from both sides.
\frac{-18x}{-18}=\frac{B-45}{-18}
Divide both sides by -18.
x=\frac{B-45}{-18}
Dividing by -18 undoes the multiplication by -18.
x=-\frac{B}{18}+\frac{5}{2}
Divide B-45 by -18.
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