Bonjour,
A = 2/3 - - 3/4 + 5/6
A = (2 x 4) / (3 x 4) + (3 x 3) / (4 x 3) + (5 x 2) / (6 x 2)
A = 8/12 + 9/12 + 10/12
A = 27/12.
B = (1/4 - 3/8) - (2/3 - 1/6 - - 7/2)
B = [(1 x 6) / (4 x 6) - (3 x 3) / (8 x 3)] - [(2 x 8) / (3 x 8) - (1 x 4) / (6 x 4) + (7 x 12) / (2 x 12)]
B = (6/24 - 9/24) - (16/24 - 4/24 + 84/24)
B = - 3/24 - 96/24
B = - 99/24
B = (3 x - 33) / (3 x 8)
B = - 33/8.
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Bonjour,
A = 2/3 - - 3/4 + 5/6
A = (2 x 4) / (3 x 4) + (3 x 3) / (4 x 3) + (5 x 2) / (6 x 2)
A = 8/12 + 9/12 + 10/12
A = 27/12.
B = (1/4 - 3/8) - (2/3 - 1/6 - - 7/2)
B = [(1 x 6) / (4 x 6) - (3 x 3) / (8 x 3)] - [(2 x 8) / (3 x 8) - (1 x 4) / (6 x 4) + (7 x 12) / (2 x 12)]
B = (6/24 - 9/24) - (16/24 - 4/24 + 84/24)
B = - 3/24 - 96/24
B = - 99/24
B = (3 x - 33) / (3 x 8)
B = - 33/8.