Question

Resuelve
5x+2y=11
2x-3y = 12
Resuelve
-2x+4y=7
3x - 5y=4​

Answer 1

Método de Eliminación

1.

$\left \{ {5x+2y=11} \atop {2x-3y = 12}} \right.$

15x+6y=33

4x-6y=24

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19x = 57

║x = 3║

∴ 2(3) - 3(y) = 12

║y = -2║

2.

$\left \{ {{-2x+4y=7} \atop {3x - 5y=4}} \right.$

-12x+24y=42

12x-20y=16

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4y = 58

║y = 29/2║

∴ 3x - 5 (29/2) = 4

║x = 51/2║