Question

3x-5y= -9 ; 2x+3y=13 en método de sustracción

Answer 1

Respuesta:

no seeeeeeeeee corazón

Answer 2

Explicación paso a paso:

$3x - 5y = - 9 \: \: ( \times 3) \\ 2x + 3y = 13( \times 5) \\ \\ 9x - 15y = - 27 \\ 10x + 15y = 65 \\ 19x = 38 \\ x = \frac{38}{19} = 2 \\ x = 2$

$2x + 3y = 13 \\ 2 \times 2 + 3y = 13 \\ 4 + 3y = 13 \\ 3y = 13 - 4 \\ 3y = 9 \\ y = \frac{9}{3} = 3 \\ y = 3$

$3 \times 2 - 5 \times 3 = 6 - 15 = - 9 \\ 2 \times 2 + 3 \times 3 = 4 + 9 = 13$

espero te sirva