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A = (- 1/2 + 2/3) . ( 2 - 1/4)
A= ( - 3/6 + 4/6) . (8/4 - 1/4)
A= 1/6 . 7/4
A= 7/24
B= ( - 2 + 1/3) : ( 2/3 - 3)
B= ( - 6/3 + 1/3) : ( 2/3 - 9/3)
B= - 5/3 : ( - 7/3)
B= + 5/3 . 3/7
B= 5/7
A . B = 7/24 . 5/7 = 5/24
A= ( - 3/6 + 4/6) . (8/4 - 1/4)
A= 1/6 . 7/4
A= 7/24
B= ( - 2 + 1/3) : ( 2/3 - 3)
B= ( - 6/3 + 1/3) : ( 2/3 - 9/3)
B= - 5/3 : ( - 7/3)
B= + 5/3 . 3/7
B= 5/7
A . B = 7/24 . 5/7 = 5/24
guilhermeallan22:
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