Oblicz.
a) (-5)-(1 3/4)
b) (-2,2) + (-10 1/5)
c) - (-1 1/3)+ (-15)
d) - (-9) - (-4 1/4)
e) (- 3 2/5) - 4,8
f) 2 1/3+ (- 5 3/5)
Tylko dla posiadaczy Podręcznika Matematyka wokół nas nowe wydanie zad.10 str. 122
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a) (-5)-(1 3/4) = -5 - 3 1/4 = - 8 1/4
b) (-2,2) + (-10 1/5) = -2,2 - 10,2 = -12,4
c) - (-1 1/3)+ (-15) = 1 1/3 - 15 = -13 2/3
d) - (-9) - (-4 1/4) = 9 + 4 1/4 = 13 1/4
e) (- 3 2/5) - 4,8 = -3,4 - 4,8 = -8,2
f) 2 1/3+ (- 5 3/5) = 2 5/15 - 5 9/15 = 35/15 - 84/15 = -49/15 = -3 4/15