bonsoir , besoin d'aide svp Pour cette exercice sur les fraction (SIMPLIFIER) : A= 13/8+5/2+3/4 B=5/12+11/24+1/6 C=2+3/7+11/14 D=3/5+4/15+7/30 E=15/9+2/3+6/18 F

bonjour

A = 13/8 + 5/2 + 3/4

  = 13/8 + 20/8 + 6/8

  = 39/8

B = 10/24+11/24 + 4/24

   = 25/24

c = 2 + 3/7 + 11/14

C = 28/14 + 6/14 + 11/14

C  = 45/14

E = 15/9 + 2/3 + 6/18

  = 30/18 + 12/18 + 6/18

  = 48/18 = 8/3

D = 18/30 + 8/30 + 7/30

   = 33/30 = 11/ 10

F  =  34/34 + 9/34 + 51/34

   = 94/34 = 47/ 17

Bonsoir,

Calculer et simplifier les fractions

A = 13/8 + 5/2 + 3/4

A = 13/8 + (5×4)/(2×4) + (3×2)+(4×2)

A = 13/8 + 20/8 + 6/8

A = 39/8

B = 5/12 + 11/24 + 1/6

B = 10/24 + 11/24 + 4/24

B = 25/24

C = 2 + 3/7 + 11/14

C = 28/14 + 6/14 + 11/14

C = 45/14

D = 3/5 + 4/15 + 7/30

D = 18/30 + 8/30 + 7/30

D = 33/30 = (33÷3)/(30÷3)

D = 11/10

E = 15/9 + 2/3 + 6/18

E = 30/18 + 12/18 + 6/18

E = 48/18 = (48÷6)/(18÷6)

E = 8/3

F = 1 + 9/34 + 3/2

F = 34/34 + 9/34 + 51/34

F = 94/34 = (94÷2)/(34÷2)

F = 47/17

Bonne soirée !