Question

oblicz
a) 2 5/6 + 1 3/7
b) 6 5/8 - 3 1/5
c) 4 2/7 - 2 4/9
d) 7/12 × 4/5
e) 3/5 ÷ 9/20
f) 5 1/2 × 4 2/3

Answer 1

Odpowiedź:

Szczegółowe wyjaśnienie:

a) 2 5/6 + 1 3/7 = 17/6 + 10/7 = 119/42 + 60/42 = 179/42 =  4 11/42

b) 6 5/8 - 3 1/5 = 53/8 - 16/5 = 265/40 - 128/40 = 137/40 = 3 17/40

c) 4 2/7 - 2 4/9 = 30/7 - 22/9 = 270/63 - 154/63 = 116/63 = 1 53/63

d) 7/12 x 4/5 = 28/60 = 7/15

e) 3/5 : 9/20 = 60/45 = 4/3 = 1 1/3

f) 5 1/2 x 4 2/3 = 11/2 x 14/3 = 154/6 = 77/3 = 25 2/3

Answer 2

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