1) OBLICZ SUMY -8+72 -205+69 -207+260 2) OBLICZ 8-20 24-69 19-42 (-9)-21 -12-34 -27-48 7-(-10) -8-(-22) -27-(-9) 4,2-5 6,8-13 3-11,8 -2,3-4,5 -10,6-(-4,3) -5,1-(-2.4) -9,7-(-12,8) -7,6-(-11,2)
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-8+72=64
-205+69 =-136
-207+260=53
2) OBLICZ
8-20=-12
24-69=-45
19-42=-23
(-9)-21=-30
-12-34 =-36
-27-48=-75
7-(-10)=17
-8-(-22) =14
-27-(-9)=-18
4,2-5 =-0,8
6,8-13=-6,2
3-11,8=-8,8
-2,3-4,5=-6,8
-10,6-(-4,3)=-6,3
-5,1-(-2.4)=-2,7
-9,7-(-12,8)=3,1
-7,6-(-11,2)=3,6