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  • Modérateur confirmé
2014-03-16T03:05:27+01:00
Salut,

1/4+1/2+7/8 = 2/8 + 4/8 + 7/8 = 13/8

1/4+5/4x3 = 1/4 + 15/4 = 16/4 = 4

1-(5/6+1/12) = 1 - (10/12 + 1/12) = 1 - 11/12 = 12/12 - 11/12 = 1/12

(2+4/3)-(2-4/3)
= (6/3 + 4/3) - (6/3 - 4/3) = 10/3 - 2/3 = 8/3

Bonne soirée !

2014-03-16T03:41:05+01:00
1) 1/4+1/2+7/8 = 2/8 + 4/8 + 7/8 = 13/8

2) 1/4+5/4x3 = 1/4 + 15/4 = 16/4 = 4

3) 1-(5/6+1/12) = 1 - (10/12 + 1/12) = 1 - 11/12 = 12/12 - 11/12 = 1/12

4) (2+4/3)-(2-4/3)
= (6/3 + 4/3) - (6/3 - 4/3) = 6/3 - 6/3 + 4/3 + 4/3 = 8/3
1) 1/4+1/2+7/8 = 2/8 + 4/8 + 7/8 = 13/8

2) 1/4+5/4x3 = 1/4 + 15/4 = 16/4 = 4

3) 1-(5/6+1/12) = 1 - (10/12 + 1/12) = 1 - 11/12 = 12/12 - 11/12 = 1/12

4) (2+4/3)-(2-4/3) = (6/3 + 4/3) - (6/3 - 4/3) = 6/3 - 6/3 + 4/3 + 4/3 = 8/3