Resp:
3x+5y=15
5y=15-3x
y=(15-3x)/5
Sustituyendo:
2x-3[(15-3x)/5]=-9
10x-45+9x=-45
19x=0
x=0
Reemplazando en y:
y=[15-3x]/5
y=[15-3(0)]/5
y=[15-0]/5
y=15/5
y=3
Solución.
(0 , 3)
x=0 , y=3
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Resp:
3x+5y=15
5y=15-3x
y=(15-3x)/5
Sustituyendo:
2x-3[(15-3x)/5]=-9
10x-45+9x=-45
19x=0
x=0
Reemplazando en y:
y=[15-3x]/5
y=[15-3(0)]/5
y=[15-0]/5
y=15/5
y=3
Solución.
(0 , 3)
x=0 , y=3