2* 3,45-3:4. 2*4 1/3 +5 5/6:2 2/9. 2 1/12*2,7*23:12. 3 1/9*1 5/16-4 1/6:2 2/9. /TO JEST KRESKA UŁAMKOWA. *TO JEST MNOŻENIE
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2* 3,45 - 3/4 = 6,9 - 0,75 = 6,15
2*4 1/3 + 5 5/6 : 2 2/4 = 2 * 13/3 + 35/6 : 10/4 = 26/3 + 35/6 * 4/10 = 52 / 6 + 35*4 / 6 * 10 = 52/6 + 140 / 60 = 52 / 6 + 14 / 6 = 66 / 6 = 11
To mi coś nie wychodzi
3 1/9 * 1 5/16 - 4 1/6 : 2 2/9 = 28/9 * 21/16 - 25/6 : 20/9 = 49/12 - 15/8 = 49*4 / 48 - 15*6 / 48 = 196/48 - 90/48 = 106 / 48 = 53 / 24 = 2 5/24