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x-bilety ulgowe
y-bilety normalne
3y+2x=34
y+3x=23| x(-3)
3y+2x=34
-3y-9x=-69
-7x=-35|:-7
x=5
y=8
y-bilety normalne
3y+2x=34
y+3x=23
3y+2x=34
y=23-3x
3(23-3x)+2x=34
69-9x+2x=34
-7x=-35
x=5
y=23-3*5
y=8
Bilet ulgowy kosztuje 5zl, a bilet normalny 8 zl. ;)
y+3x=23 / * (-3)
3y+2x=34
-3y-9x=--69
-7x= -35// (-7)
x=5
y=23-3*5
y=8