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45 10/63 - 44 25/84 / 0,75 - (2 1/3 - 1 1/9) : 4 : 31 =
= 2835/63 - 3721/84*4/3 - (7/3 - 10/9)*31/4 =
= 2835/63 - 3721/63 - (21/9 - 10/9) * 31/4 =
= - 886/63 - 11/9*31/4 =
= - 886/63 - 341/36 =
= -3544/252 - 2387/252 =
= - 5931/252 =
= - 23 i 135/252 =
= - 23 i 45/84 =
= - 23 i 15/28