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y=lenteja
z=azúcar
4x+3y+5z=14.5
5x+4y+3z=11.8
2x+2y+z=4.6
4x+3y+5z=14.5(-3)
5x+4y+3z=11.8(5)
-12x-9y-15z=-43.50
25x+20y+15z=59
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13x+11y...=15.5 ecuación 4
13x+11y=15.5(7)
-6x-7y=-8.5(11)
91x+77y=108.5
-66x-77y=-93.5
---------------------
25x.........=15
x=0.6
13x+11y=15.5
13(0.6)+11y=15.5
7.8+11y=15.5
11y=7.7
y=0.7
2x+2y+z=4.6
z=4.6-2(0.6)-2(0.7)
z=4.6-1.2-1.4
z=2
arroz=0.6 kg
lenteja=0.7 kg
azúcar=2 kg