Question

3x+4y=-2 -5x-y=11 metodo de igualacion porfavor​

Answer 1

Explicación paso a paso:

$3x + 4y = - 2 \\ - 5x - y = 11 \\ 3x + 4y = - 2 \: (5) \\ - 5x - y = 11(3) \\ 15x + 20y = - 10 \\ - 15x - 3y = 33 \\ 17y = 23 \\ y = \frac{23}{17} \\ 3x + 4y = - 2 \\ 3x + 4( \frac{23}{17} ) = - 2 \\ 3x + \frac{92}{17} = - 2 \\ 3x = - 2 - \frac{92}{17} \\ 3x = \frac{ - 34 - 92}{17} \\ x = \frac{ - 126}{17}$