bonsoir
A = ( 3 - 7/5 ) : ( 1 - 9 /10)
A = ( 15/5 - 7 /5 ) : ( 10/10 - 9 /10 )
A = 8/5 : 1 /10
A = 8/5 x 10 = 80/5 = 16
B = ( 4/5 - 10/5 ) x ( 9/12 - 8/12 )
B = - 6 /5 x 1 /12
B = - 6/60 = - 1 /10
PGCD de 1470 et 693 = 21
tu simplifies la fraction par 21
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bonsoir
A = ( 3 - 7/5 ) : ( 1 - 9 /10)
A = ( 15/5 - 7 /5 ) : ( 10/10 - 9 /10 )
A = 8/5 : 1 /10
A = 8/5 x 10 = 80/5 = 16
B = ( 4/5 - 10/5 ) x ( 9/12 - 8/12 )
B = - 6 /5 x 1 /12
B = - 6/60 = - 1 /10
PGCD de 1470 et 693 = 21
tu simplifies la fraction par 21