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y-ilość królików
układ równań:
x+y=11
2x+4y=34
x+y=11
x+2y=17
-x-y=-11
x+2y=17
y=6
x=5
y- kury
wszystko w klamerce
x+y= 11
4x+2y= 34
______
x= 11-y
4(11-y)+2y= 34
______
x= 11-y
44-4y+2y= 34
_____
x= 11-y
-2y= -10 |: -2
____
x= 11-y
y=5
____
x= 11-5
y=5
_____
x=6
y=5
Jest 6 królików i 5 kur :)
y- króliki
x+y= 11/*-2
2x+4y=34
-2x -2y = -22
2x+4y = 34
2y=12/ :2
y=6
x+6=11
x=11-6
x= 5