bonjour pouvez vous m'aidez: recopie et et calcule puis si possible simplifie a)1/6+3/6 b)31/14-5/14 c)25/33+19/33 d)15/37+22/37 e)45/143+20/143 f)1/27+4/27+7/2

Bonjour,

a)1/6+3/6

= 4/6

= (2 x 2) / (2 x 3)

= 1/3

b)31/14-5/14

= 26/14

= (2 x 13) / (2 x 7)

= 13/7

c)25/33+19/33

= 44/33

= (11 x 4) / (11 x 3)

= 4/3

d)15/37+22/37

= 37/37

= 1

e)45/143+20/143

= 65/143

= (13 x 5) / (13 x 11)

= 5/11

f)1/27+4/27+7/27

= 12/27

= (3 x 4) / (3 x 9)

= 4/9

g)16/28-7/28-7/5-/28 --> Il manque un nombre