Question

Чx + -3y=20
2х + 5y=-16​

Answer 1

• Sistema de ecuaciones

Чx + -3y=20

2х + 5y=-16

• Solucion

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x=74/7

y=-52/7

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EXPLICACION PASO A PASO :

$Чx + -3y=20 \\ </strong></p><p><strong>[tex]Чx + -3y=20 \\ 2х + 5y=-16$

$x = 5 - \frac{3}{4} y$

$2x + 5y = - 16$

$2(5 - \frac{3}{4} y) + 5y = - 16$

$y = - \frac{52}{7}$

$x = 5 - \frac{3}{4} \times ( - \frac{52}{7} )$

$x = \frac{74}{7}$

$4 \times \frac{74}{7} + 3 \times ( - \frac{52}{7} ) = 20$

$2 \times \frac{74}{7} + 5 \times ( - \frac{52}{7} ) = - 16$

$20 = 20 \\ - 16 = - 16$

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