SHORAMI
Answered

Bonsoir excusez-moi de vous déranger mais j’ai quelques exercices en maths est-ce que quelqu’un voudrais bien m’aider à simplifier le plus possible c’est calcul merci de votre attention :)

1) 11/15-3/5=

2) 3/14+11/10=

3) 1/3x5/2=

4) 15/14x49/20=

5) 3/5:7/2=

Sagot :

LOULAKAR

Réponse :

Explications étape par étape

Bonjour

1) 11/15-3/5= 11/15 - (3 x 3)/(5 x 3)

11/15 - 3/5 = 11/15 - 9/15

11/15 - 3/5 = (11 - 9)/15

11/15 - 3/5 = 2/15

2) 3/14+11/10= (3 x 5)/(14 x 5) + (11 x 7)/(10 x 7)

3/14 + 11/10 = 15/70 + 77/70

3/14 + 11/10 = 92/70

3/14 + 11/10 = (2 x 46)/(2 x 35)

3/14 + 11/10 = 46/35

3) 1/3x5/2= (1 x 5)/(3 x 2)

1/3 x 5/2 = 5/6

4) 15/14x49/20= 15/20 x 49/14

15/14 x 49/20 = (5 x 3)/(5 x 4) x (7 x 7)/(7 x 2)

15/14 x 49/20 = 3/4 x 7/2

15/14 x 49/20 = (3 x 7)/(4 x 2)

15/14 x 49/20 = 21/8

5) 3/5:7/2= 3/5 x 2/7

3/5 : 7/2 = (3 x 2)/(5 x 7)

3/5 : 7/2 = 6/35

MAUDMARINE

Bonjour

1) 11/15-3/5

= 11/15 - (3 x 3) / (5 x 3)

= 11/15 - 9/15

= 2/15

2) 3/14+11/10

= (3 x 5) / (14 x 5) + (11 x 7) / (10 x 7)

= 15/70 + 77/70

= 92/70

= (2 x 46) / (2 x 35)

= 46/35

3) 1/3x5/2

= 5/6

4) 15/14x49/20

= 735/280

= (35 x 21) / (35 x 8=

= 21/8

5) 3/5:7/2

= 3/5 x 2/7

= 6/35