oblicz: Np: 2/4 - ułamek
1) (-7/12) + 3/8 =
2) (-3 1/5) - 2 1/2 =
3) 1 1/6 - (-2 1/12) =
4) 3,7 - 4 2/5 =
5) (- 7/8) + (0,7) =
6) 1,4 - (- 1 3/4) =
7) (- 2 1/5) - (- 1,6) =
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1) (-7/12) + 3/8 =-56/96+36/96=-5/24
2) (-3 1/5) - 2 1/2 =-3 2/10 - 5/10=-8 7/10
3) 1 1/6 - (-2 1/12) = 1 2/12+2 1/12=3 3/12=3 1/4
4) 3,7 - 4 2/5 = 37/10-4 2/5=37/10-4 4/10=3 7/10 - 4 4/10=-1 3/10
5)(- 7/8) + (0,7) =-7/8+7/10=-70/80+80/80=10/80=1/8
6) 1,4 - (- 1 3/4) =14/10+1 3/4=56/40+1 30/40=1 16/40 + 1 30/40=2 46/40=3 6/40=3 3/20
7) (- 2 1/5) - (- 1,6) = -2 1/5+1,6=-2,2+1,6=-0,6
1) (-7/12) + 3/8 = -14/24 + 9/24 = -5/24
2) (-3 1/5) - 2 1/2 = -16/5 - 5/2= -32/10 - 25/10 = -57/10
3) 1 1/6 - (-2 1/12) = 1 1/6 + 2 1/12 = 7/6 + 25/12 = 14/12 + 25/12 = 39/12
4) 3,7 - 4 2/5 = 37/10 - 22/5 = 37/10 - 44/10 = -7/10
5) (- 7/8) + (0,7) = -7/8 + 7/10 = -35/40 + 28/40 = -7/40
6) 1,4 - (- 1 3/4) = 14/10 + 7/4= 28/20 + 35/20 = 63/20 = 3 3/20
7) (- 2 1/5) - (- 1,6) =- 11/5 + 16/10 = -22/10 + 16/10 = - 6/10