Question

-2x+y = -10
X-Y = -3​

Answer 1

No me la sé jaisuaoajdjs

Answer 2

Respuesta:

y=16

Explicación paso a paso:

$\left \{ {{-2x+y = -10} \atop {x-y = -3}} \right. \\\left \{ {{-2x+y = -10} \atop {x=-3+y}} \right.$

sustituir la x (-3+y) en la ecuación de arriba

-2 (-3+y)+y = -10

6-2y+y = -10

-2y+y = -10-6

-y = -16

multiplicar por -1

y=16