Respuesta :

nicoledaito
4x+5(3x+9)=7
4x+15x+45=7
19x=7-45
19x = -38
[tex] \frac{19x}{19} = \frac{ - 38}{19} [/tex]
x= -2

y=3(-2)+9
y=-6+9
y= 3

Answer:

-2 and 3

Step-by-step explanation: