Bonjour pouvez vous m'aider a calculer en detaillant les étapes,puis simplifie si possible le resultat.
a = 2 x (3 sur 8 + 1 sur 4 ) - 7 sur 8 b= 3 sur 5+ 9 sur 5 x 1 sur 4 - 7 sur 10 c = 3 + 7 sur 3 x 9 sur 2 d = 9 sur 11 - 8 sur 11 x 3 sur 4 + 5 sur 22 merci
a = 2 x (3/8 + 1/4 ) - 7/8 a = 2 x (3/8 + 1 x 2 / 4 x 2) - 7/8 a = 2 x (3/8 + 2/8) - 7/8 a = 2 x 5/8 - 7/8 a = 10/8 - 7/5 a = 3/8
b = 3/5 + 9/5 x 1/4 - 7/10 b = 3/5 + 9/20 - 7/10 b = 3 x 4 / 5 x 4 + 9/20 - 7 x 2 / 10 x 2 b = 12/20 + 9/20 - 14/20 b = 21/20 - 14/20 b = 7/20
c = 3 + 7/3 x 9/2 c = 3 + 63/6 c = 3 x 6 / 1 x 6 + 63/6 c = 18/6 + 63/6 c = 81/6 c = 3 x 27/ 3 x 2 c = 27/2
d = 9/11 - 8/11 x 3/4 + 5/22 d = 9/11 - 24/44 + 5/22 d = 9 x 4 / 11 x 4 - 24/44 + 5 x 2 / 22 x 2 d = 36/44 - 24/44 + 10/44 d = 46/44 - 24/44 d = 22/44 d = 2 x 11 / 2 x 22 d = 11/22
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Verified answer
a = 2 x (3/8 + 1/4 ) - 7/8a = 2 x (3/8 + 1 x 2 / 4 x 2) - 7/8
a = 2 x (3/8 + 2/8) - 7/8
a = 2 x 5/8 - 7/8
a = 10/8 - 7/5
a = 3/8
b = 3/5 + 9/5 x 1/4 - 7/10
b = 3/5 + 9/20 - 7/10
b = 3 x 4 / 5 x 4 + 9/20 - 7 x 2 / 10 x 2
b = 12/20 + 9/20 - 14/20
b = 21/20 - 14/20
b = 7/20
c = 3 + 7/3 x 9/2
c = 3 + 63/6
c = 3 x 6 / 1 x 6 + 63/6
c = 18/6 + 63/6
c = 81/6
c = 3 x 27/ 3 x 2
c = 27/2
d = 9/11 - 8/11 x 3/4 + 5/22
d = 9/11 - 24/44 + 5/22
d = 9 x 4 / 11 x 4 - 24/44 + 5 x 2 / 22 x 2
d = 36/44 - 24/44 + 10/44
d = 46/44 - 24/44
d = 22/44
d = 2 x 11 / 2 x 22
d = 11/22