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b) 2 1/3 + 1,4 = 2 10/30 + 1 12/30 = 3 22/30
c)3,6 - 1 1/4 = 3.6 - 1,25 = 2,35
d) 3 1/9 - 1 1/2 = 3 2/18 - 1 9/18 = 2 20/18 - 1 9/18 = 1 11/18
e) 2/3 * 0,06 = 2/3 * 6/100 = 12/300 = 4/100 = 1/25
f) 2,4 * 1 1/4 = 2,4 * 1,25 = 3
g) 4,2 : 1 2/5 = 4,2 : 1,4 = 3
h) 2 1/3 : 0,7 = 2 1/3 : 7/10 = 7/3 : 7/10 = 7/3 * 10/7 = 10/3 = 3 1/3