April 2019 1 9 Report
Resolución de sistemas de ecuaciones



1) .- 3x+ 2y = 21
5x - y =22

Seleccione una:
a. x= 5 , y= 3
b. x= -5 , y= 3
c. x= 3 , y= 5
d. x=-3 , y= 5



x + 2y = 0
5x - y = 11
Seleccione una:
a. x= -1, y=2
b. x= -2, y= -1
c. x= 2, y= -1
d. x= 2, y=1



x + y =11
2x - y= 1

Seleccione una:
a. x=-4, y=-7
b. x=7, y=-4
c. x=-7, y=4
d. x=4, y=7

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