Consigne : Effectuer les calculs suivants en respectant les priorités opératoires et simplifier au maximum les résultats. ( MARQUER LES ÉTAPES )
a = ( 1 sur 2 - 3 sur 4) X 16 sur 9 b = 1 sur 2 - 3 sur 4 X 16 sur 9 c = ( 1 sur 5 - 3 sur 10 ) X ( 1 sur 6 + 1 sur 2 ) d = 1 sur 5 - 3 sur 10 X 1 sur 6 + 1 sur 2 Merci d'avance
a = ( 1/2 - 3/4) X 16/9 a = (1 x 2 / 2 x 2 - 3/4) x 16/9 a = (2/4 - 3/4) x 16/9 a = - 1/4 x 16/9 a = - 16/36 a = 4 x - 4 / 4 x 9 a = - 4/9
b = 1/2 - 3/4 X 16/9 b = 1/2 - 48/36 b = 1 x 18 / 2 x 18 - 48/36 b = 18/36 - 48/36 b = - 30/36 b = 6 x - 5 / 6 x 6 b = - 5/6
c = ( 1/5 - 3/10 ) X ( 1/6 + 1/2 ) c = (1 x 2 / 5 x 2 - 3/10) x (1/6 + 1 x 3 / 2 x 3) c = (2/10 - 3/10) x (1/6 + 3/6) c = - 1/10 x 4/6 c = - 4/60 c = 4 x - 1 / 4 x 15 c = - 1/15
d = 1/5 - 3/10 X 1/6 + 1/2 d = 1/5 - 3/60 + 1/2 d = 1 x 12 / 5 x 12 - 3/60 + 1 x 30 / 2 x 30 d = 12/60 - 3/60 + 30/60 d = 39/60 d = 3 x 13 / 3 x 20 d = 13/20
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Verified answer
Bonjour,a = ( 1/2 - 3/4) X 16/9
a = (1 x 2 / 2 x 2 - 3/4) x 16/9
a = (2/4 - 3/4) x 16/9
a = - 1/4 x 16/9
a = - 16/36
a = 4 x - 4 / 4 x 9
a = - 4/9
b = 1/2 - 3/4 X 16/9
b = 1/2 - 48/36
b = 1 x 18 / 2 x 18 - 48/36
b = 18/36 - 48/36
b = - 30/36
b = 6 x - 5 / 6 x 6
b = - 5/6
c = ( 1/5 - 3/10 ) X ( 1/6 + 1/2 )
c = (1 x 2 / 5 x 2 - 3/10) x (1/6 + 1 x 3 / 2 x 3)
c = (2/10 - 3/10) x (1/6 + 3/6)
c = - 1/10 x 4/6
c = - 4/60
c = 4 x - 1 / 4 x 15
c = - 1/15
d = 1/5 - 3/10 X 1/6 + 1/2
d = 1/5 - 3/60 + 1/2
d = 1 x 12 / 5 x 12 - 3/60 + 1 x 30 / 2 x 30
d = 12/60 - 3/60 + 30/60
d = 39/60
d = 3 x 13 / 3 x 20
d = 13/20