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Sagot :

AMELIMAZURE74
A = (2*2) / ( 3*2) + 5/6
A = 4/6 + 5/6
A = 9/6
A = 3/2


B = 4/5 - 3/10
B = (4*2) / (5*2) - 3/10
B = 8/10 - 3/10
B = 5/10
B = 1/2


C = 8/8 + 12/8
C = 20/8
C = 5/2


D = (7*2) / (9*2) + (21*3) / (6*3)
D = 14/18 + 63/18
D = 77/18
AICHAGENIE

Réponse:

A= 12+15/18

=27/18

=3/2

B=4/5-3/10

=40-15/50

=25/50

=1/2

C=8+12/8

=20/8

=5/2

D= 7/9×6/21

=1/9×6/3

=6/27

=2/9

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