Question

x+3y=6
2x-y=4
para hoy por favor

Answer 1

Respuesta:

$\frac{18}{7} + 3 \times \frac{8}{7} = \frac{18 + 24}{7} = \frac{42}{7} = 6$

$2 \times \frac{18}{7} - \frac{8}{7} = \frac{36}{7} - \frac{8}{7} = \frac{28}{7} = 4$

Explicación paso a paso:

$x + 3y = 6 \\ x = 6 - 3y \\ 2x - y = 4 \\ 2x = 4 + y \\ x = \frac{4 + y}{2} \\ \frac{4 + y}{2} = 6 -3 y \\ 4 + y = 12 - 6y \\ - 12 + 4 = - 6y - y \\ - 8 = - 7y \\ 7y = 8 \\ y = \frac{8}{7}$

$x + 3y = 6 \\ x = 6 - 3y \\ = 6 - 3 \times \frac{8}{7} = 6 - \frac{24}{7} = \\ \frac{42}{7} - \frac{24}{7} = \frac{18}{7}$

espero te sirva