Ejercicio 1
\[-4x + 2y = 4x \atop x - 2y = -7x\]
\[x = \mathbf{?}, y = \mathbf{?}\]
\[x = \mathbf{?}, y = \mathbf{?}\]
Ejercicio 2
\[-4x - 2y = 22x \atop 5x - 3y = -55x\]
\[x = \mathbf{?}, y = \mathbf{?}\]
\[x = \mathbf{?}, y = \mathbf{?}\]
Ejercicio 3
\[x^2 - 5y = 35 \atop -4x + y = -22\]
\[x = \mathbf{?}, y = \mathbf{?}\]
\[x = \mathbf{?}, y = \mathbf{?}\]
Ejercicio 4
\[x^2 + 5y = 105 \atop 3x - 4y = -34\]
\[x = \mathbf{?}, y = \mathbf{?}\]
\[x = \mathbf{?}, y = \mathbf{?}\]
Ejercicio 5
\[x^2 + 2y^2 = 57 \atop 2x + 2y = 18\]
\[x = \mathbf{?}, y = \mathbf{?}\]
\[x = \mathbf{?}, y = \mathbf{?}\]
Ejercicio 6
\[x^2 - y^2 = -21 \atop -3x + 3y = -21\]
\[x = \mathbf{?}, y = \mathbf{?}\]
\[x = \mathbf{?}, y = \mathbf{?}\]
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