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100% - x
2x = 100*12
2x = 1200 /:2
x = 600
ta liczba to 600
100%-x
x= 100*12/:2
x= 1200:2
x= 600
Odp: Ta liczba to 600.
Spr.
600*2%=600*2/100=12
Liczę na naj.