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= 1,6 - 3 i 375/1000 + 250/1000=
= 1,6 - 3,375 + 0,25=
= - 1,775 + 0,25=
= - 1,525
lub na ułamkach zwykłych
1,6 - 3 i 3/8 + 2/8=
= 1 i 6/10 - 3 i 3/8 + 2/8=
= 1 i 3/5 - 3 i 3/8 + 2/8 =
= 1 i 24/40 - 3 i 15/40 + 10/40=
= - 1 i 31/40 + 10/40=
= - 1 i 21/40
3/8+2/8=5/8