\left\{ \begin{array} { l } { y = 2 } \\ { x + y = 4 } \end{array} \right.
Solve for y, x
x=2
y=2
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\left\{ \begin{array} { l } { y = 2 } \\ { x + y = 4 } \end{array} \right.
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x+2=4
Consider the second equation. Insert the known values of variables into the equation.
x=4-2
Subtract 2 from both sides.
x=2
Subtract 2 from 4 to get 2.
y=2 x=2
The system is now solved.
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