bonjour a tous de l'aide svp merci. Calculer ces expressions: a) 5/4x7/3; b) 3/4x3/8; c)7x1/9; d) 12x2/5; e) 6/11x1/5; f) 2/3x5/9; g) 7x8/5; h) 9/2x3/5; i) 15/7x2/11; le signe x veut dire multiplier merci a vous
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Bonjour,a) 5/4 x 7/3
= 35/20
= 5 x 7 / 5 x 4
= 7/4
b) 3/4 x 3/8
= 9/32
c) 7 x 1/9
= 7/9
d) 12 x 2/5
= 24/5
e) 6/11 x 1/5
= 6/55
f) 2/3 x 5/9
= 10/27
g) 7 x 8/5
= 56/5
h) 9/2 x 3/5
= 27/10
i) 15/7 x 2/11
= 30/77