\left\{ \begin{array} { l } { y = 20 x } \\ { y = 40 } \end{array} \right.
Solve for y, x
x=2
y=40
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\left\{ \begin{array} { l } { y = 20 x } \\ { y = 40 } \end{array} \right.
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40=20x
Consider the first equation. Insert the known values of variables into the equation.
\frac{40}{20}=x
Divide both sides by 20.
2=x
Divide 40 by 20 to get 2.
x=2
Swap sides so that all variable terms are on the left hand side.
y=40 x=2
The system is now solved.
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