Question

2x + 3y = 10
6x + 4y = 20
​

Answer 1

Respuesta:

$y=2$

$x=2$

Explicación paso a paso:

$\left \{ {{2x+3y=10} \atop {6x+4y=20}} \right.$

$2x+3y=10$

$2x=10-3y$

$x=\frac{10-3y}{2}$

$6x+4y=20$

$6x=20-4y$

$x=\frac{20-4y}{6}$

$\frac{10-3y}{2}= \frac{20-4y}{6}$

$6(10-3y)=2(20-4y)$

$60-18y=40-8y$

$60-40=-8y+18y$

$20=10y$

$20/10=y$

$2=y$

$2x+3y=10$

$2x+3(2)=10$

$2x+6=10$

$2x=10-6$

$2x=4$

$x=4/2$

$x=2$