Question

Alguel me ayuda
3× + 2y = 7
3× + y =5


6m + 2n =-2
m + 4n =-35

7× - 2y =-3
19y - 6x =89

Answer 1

Explicación paso a paso:

$b) \: \: 6m + 2n = - 2 \\ m + 4n = - 35$

$6m + 2n = - 2 \\ m = - 35 - 4n$

$6( - 35 - 4n) + 2n = - 2$

$n = - \frac{104}{11}$

$m = - 35 - 4 \times ( - \frac{104}{11} )$

$m = \frac{31}{11}$

$- 2 = - 2 \\ - 35 = - 35$

SOLUCIÓN

$m = \frac{31}{11}$

$n = - \frac{104}{11}$

$c) \: \: 7 \times ( - 2)y = - 3 \\ 19y - 6x = 89$

$y = \frac{3}{14} \\ 19y - 6x = 89$

$19 \times \frac{3}{14} - 6x = 89$

$x = - \frac{1189}{84}$

$- 3 = - 3 \\ 89 = 89$

SOLUCIÓN

$x = - \frac{1189}{84}$

$y = \frac{3}{14}$

CON GUSTO :)