Solve for x
x=\frac{400}{x_{2}}
x_{2}\neq 0
Solve for x_2
x_{2}=\frac{400}{x}
x\neq 0
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x_{2}x=400
The equation is in standard form.
\frac{x_{2}x}{x_{2}}=\frac{400}{x_{2}}
Divide both sides by x_{2}.
x=\frac{400}{x_{2}}
Dividing by x_{2} undoes the multiplication by x_{2}.
xx_{2}=400
The equation is in standard form.
\frac{xx_{2}}{x}=\frac{400}{x}
Divide both sides by x.
x_{2}=\frac{400}{x}
Dividing by x undoes the multiplication by x.
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