Coucou je pense pouvoir t'aider :
A = 7/3 - 4/3 divisé par 2/5 = 3/3 divisé par 2/5 = 3/3 x 5/2 = 15/6
B = - 7/5 x 5 ( 3/1 - 8/21 ) = - 7/5 x ( 63/21 - 8/21 ) = - 7/5x 55/21 = - 385/105 = 77/21
C = ( 2- 1/3 ) + ( 5/1 + 5/6 ) = ( 5/3 - 1/3 ) + ( 30/6 + 5/6 ) = 5/3 + 35/6 = 45/6
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Coucou je pense pouvoir t'aider :
A = 7/3 - 4/3 divisé par 2/5 = 3/3 divisé par 2/5 = 3/3 x 5/2 = 15/6
B = - 7/5 x 5 ( 3/1 - 8/21 ) = - 7/5 x ( 63/21 - 8/21 ) = - 7/5x 55/21 = - 385/105 = 77/21
C = ( 2- 1/3 ) + ( 5/1 + 5/6 ) = ( 5/3 - 1/3 ) + ( 30/6 + 5/6 ) = 5/3 + 35/6 = 45/6