Question

Calcule as frações, se possível, simplifique o resultado

a) 2|3 - 1|2

b) 4|5 + 14|20

c) 3|2 - 2|3

d) 5|9 + 2|6
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Answer 1

a) 2|3 - 1|2

= 2/3 - 1/2 = (2.2 - 3.1)/6 = (4-3)/6

= 1/6

_____________

b) 4|5 + 14|20

= 4/5 + 14/20 (:2)/(:2) = 4/5 + 7/10 = (2.4 + 1.7)/10 = (8+7)/10 = 15/10 (:5)/(:5)

= 3/2

c) 3|2 - 2|3

= 3/2 - 2/3 = (3.3 - 2.2)/6 = (9-4)/6

= 5/6

_____________

d) 5|9 + 2|6

=5/9 + 2/6 (:2)/(:2) = 5/9 + 1/3 = (1.5 + 3.1)/9 = (5+3)/9

= 8/9