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b)
c)
a)
(3 2/3 + 1,8) : 41/5 = (3 2/3 + 1 8/10) : 41/5 = (3 20/30 + 1 24/30) * 5/41 =
= 4 44/30 * 5/41 = 4 22/15 * 5/41 = 82/15 * 5/41 = 2/3
b)
(4 2/3 - 3,25) : (3 1/3 - 2,5) = (4 2/3 - 3 1/4) : (3 1/3 - 2 1/2) =
= (4 8/12 - 3 3/12) : (3 2/6 - 2 3/6) = 1 5/12 : (2 8/6 - 2 3/6) = 1 5/12 : 5/6 =
= 17/12 * 6/5 = 17/10 = 1 7/10
c)
[√(1 9/16) * 2/3 + (- 3 1/3) : 2] * (- 1/4) = [√(25/16) * 2/3 - 10/3 * 1/2] * (- 1/4) =
[5/4 * 2/3 - 10/6] * (- 1/4) = (5/6 - 10/6) * (- 1/4) = - 5/6 * (- 1/4) = 5/24