x/x+500= 1/5
5x= x+500
4x= 500
x= 125
trzeba wlać 125 cm3 soku
500:4=125
125·5=625
do dzbanka trzeba wlać 125cm3 soku
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x/x+500= 1/5
5x= x+500
4x= 500
x= 125
trzeba wlać 125 cm3 soku
500:4=125
125·5=625
do dzbanka trzeba wlać 125cm3 soku