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y-wzrost Wojtka
x-y=150cm
88%x=y
x-0,88x=18
0,12x=18/:0.12
x=150cm
0.88x=y
0.88*150=y
y=132cm
y-wzrost wojtka
x-y=18
y=88%x
-y=18-x /:(-1)
y=-18+x
-18+x+0.88x
0.12x=18 /:0.12
x=150cm
150-y=18
-y=18-150
-y=-132 /:(-1)
y=132
odp.wzrost jacka wynosi 150cm a wojtka 132 cm