Solve for a
a=\frac{v}{400}
Solve for v
v=400a
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v=a\times 400
Calculate 20 to the power of 2 and get 400.
a\times 400=v
Swap sides so that all variable terms are on the left hand side.
400a=v
The equation is in standard form.
\frac{400a}{400}=\frac{v}{400}
Divide both sides by 400.
a=\frac{v}{400}
Dividing by 400 undoes the multiplication by 400.
v=a\times 400
Calculate 20 to the power of 2 and get 400.
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