Oblicz :
a) -2 1/5 + 3,3 =
b) 1 5/6 - 3 1/3 =
c) 4,3 - 7,5 =
d) -4,5 - 2 1/4 =
e) -3 1/6 - ( - 5 5/6 ) =
f) 7 1/3 + ( -4 5/6) =
g) -5 4/7 + 7 =
h) 1,23 - 9 =
i) -6 - (-4 5/9) =
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a) -2 1/5 + 3,3 =-2,2+3,3=1,1
b) 1 5/6 - 3 1/3 =11/6-10/3=11/6-20/6=-9/6=-3/2=-1,5
c) 4,3 - 7,5 =-3,2
d) -4,5 - 2 1/4 =-4,5-2,25=-6,75
e) -3 1/6 - ( - 5 5/6 ) =- 3 1/6+ 5 5/6=-19/6+35/6=16/35
f) 7 1/3 + ( -4 5/6) =7 1/3-4 5/6=22/3-29/6=44/6-29/6=15/6=2 3/6=2 1/2
g) -5 4/7 + 7 =-39/7+49/7=10/7=1 3/7
h) 1,23 - 9 =-7,77
i) -6 - (-4 5/9) =-6+4 5/9=-6+41/9=-54/9+41/9=-13/9=-1 4/9
a) -2 1/5 + 3,3 = -2,2 + 3,3 = 1,1
b) 1 5/6 - 3 1/3 = 1 5/6 - 3 2/6 = -1 3/6
c) -3,2
d) -4,5 - 2 1/4 = -4,5 - 2,25 = -6,75
e) -3 1/6 + 5 5/6 = 2 4/6 = 2 2/3
f) 7 1/3 - 4 5/6 = 7 2/6 - 4 5/6 = 2 3/6 = 2 1/2
g) 1 3/7
h) -7,77
i) -6 + 4 5/9 = -1 4/9