Question

2x + y = 9 9 y 2x-3y = 29 Sistema de ecuaciones lineales con dos variables mediante el método de eliminación

Answer 1

??? no entiendo :v

Explicación paso a paso:

hola f

Answer 2

Respuesta:

x=7

y=-5

Explicación paso a paso:

Solve equation [1] for the variable  y

[1]    y = -2x + 9

Plug this in for variable  y  in equation [2]

[2]    2x - 3•(-2x+9) = 29

[2]    8x = 56

Solve equation [2] for the variable  x

[2]    8x = 56

[2]    x = 7

By now we know this much :

x = 7

y = -2x+9

Use the  x  value to solve for  y

   y = -2(7)+9 = -5