\left\{ \begin{array} { l } { 2 x 11 = y } \\ { 3 x + y = 10 } \end{array} \right.
Solve for x, y
x=\frac{10-2x_{11}}{3}
y=2x_{11}
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y=2x_{11}
Consider the first equation. Swap sides so that all variable terms are on the left hand side.
2x_{11}+3x=10
Substitute 2x_{11} for y in the other equation, y+3x=10.
3x=10-2x_{11}
Subtract 2x_{11} from both sides of the equation.
x=\frac{10-2x_{11}}{3}
Divide both sides by 3.
y=2x_{11},x=\frac{10-2x_{11}}{3}
The system is now solved.
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