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x-12%x=x-0,12x=0,88x=ilość gołebi jurka
x+0,88x=47
1,88x=47
x=47:1,88
x=25
0,88x=0,88×25=22
jurek ma 22, a maciek 25 gołabków
Gołębie Kazimierza-x
golebie Jana x-12%
x+x-12%x=47
1,88x=47/:1,88
x=4700/:188
x=25
47-25=22
odp:Pan kazimierz-25gołebi a pan jan-22gołebie