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1. 1 3/5 - 2 1/6= 8/5 - 13/6 = 48/30 - 65/30= - 17/30
2. 3 3/8+2 5/6= 27/8 + 17/6 = 81/24+ 68/24 = 149/24 = 6 5/24
3. 1/2 -(- 1/6 - 1/3) = 1/2-(-1/6-2/6)= 1/2-2/6= 3/6-2/6=1/6
4. 7/6+(- 5/4 - 4/3 )= 7/6+(-15/12 -16/12) = 7/6 -31/12=42/12 - 31/12 = 11/12
5.-(-2 2/3)+7/15= 8/3 + 7/15=40/15+7/15=47/15=3 2/15
6.-1 9/16+11/12=-25/16+11/12= 75/48+44/48= 119/48=2 23/48
7.1/2-1/3-(1/4-1/5)= 1/2-1/3-(5/20-4/20)= 1/2-1/3-1/20=30/60-20/60-3/60=7/60
zad. 2
Oblicz: 2-8-12/12+12= 2-8-1+12=1 bo (2-8-1=-11)
3. nie wiem ;/