Resolver el sistema:
x + 3y = 9
x - 2y = -1
halle x+y:
a.
3
b.
8
c.
5
d.
7
e.
2
x + 3y = 9
x - 2y = -1
halle x+y:
a.
3
b.
8
c.
5
d.
7
e.
2
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Respuesta:
5
Explicación paso a paso:
x+3y=9
x-2y=-1
x+3y-x+2y=9+1
5y=10
y=2
x=3
2+3
5