zad 10 /103 matematyka z plusem . Rozwiąż układy równań . a .
x/2 + y/3 = 1i 1/3
x/3 - y/2= 2 i 1/3
odp
x=4
y=-2
x/2+y/3=1 i 1/3 /*6x/3 - y/2= 2 i 1/3 /*6
3x+2y=8 /*32x-3y=14 /*29x+6y=244x-6y=289x+4x+6y-6y=24+2813x=52/13x=43*4+2y=812+2y=82y=8-122y=-4/:2y=-2x=4y=-2
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x/2+y/3=1 i 1/3 /*6
x/3 - y/2= 2 i 1/3 /*6
3x+2y=8 /*3
2x-3y=14 /*2
9x+6y=24
4x-6y=28
9x+4x+6y-6y=24+28
13x=52/13
x=4
3*4+2y=8
12+2y=8
2y=8-12
2y=-4/:2
y=-2
x=4
y=-2