Oblicz i podaj obliczenia. Jak coś to są ułamki np.4/9 cztery dziewiąte
a) 3 4/9 - 1 2/3 * 1,8
b) 0,9 : 1/5 + 1/3 - 3/5
c) 2 1/7 * 1,6 * 2 1/3
d) 6 2/3 * ( 0,25 + 1/5 )
e) 3 1/3 - 1/3 * 0,6
f) 4,5 * 5 5/9 + 6,4 * 3/8
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A) 19/5 - 5/3 x 18/10= 19/5 - 6/2 = 38/10 - 30/10= 8/10
B) 9/10: 1/5 + 1/3-3/5=9/10 x 5/1=9/2+ 1/3 - 3/5= 18/6+ 2/6=20/6 - 3/5= 100/30 - 18/30= 82/30= 2 22/30
C)2 1/7 x 1 6/10 x 7/3= 15/7x16/10=48/14x7/3=16/6=2 4/6
D) 6 2/3x 1,75= 20/3 x 7/4= 35/3= 11 2/3
E) 1/3 x 6/10= 2/10= 3 1/3- 2/10= 10/3-2/10= 100/30 - 6/30= 94/30= 3 4/30
F) 4 5/10 x 4 5/9= 45/10x 50/9= 25/1
6 4/10x 3/8= 64/10x 3/8 = 24/10
25/1+ 24/10= 250/10 + 24/10= 274/10= 27 4/10