\left\{ \begin{array} { l } { - x + y = - 1 } \\ { x = 2 } \end{array} \right.
Solve for x, y
x=2
y=1
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-2+y=-1
Consider the first equation. Insert the known values of variables into the equation.
y=-1+2
Add 2 to both sides.
y=1
Add -1 and 2 to get 1.
x=2 y=1
The system is now solved.
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