Sagot :
Bonjour
1 - 7/3
= (1 x 3) / (1 x 3) - 7/3
= 3/3 - 7/3
= - 4/3
- 2/10 + 7/25
= (- 2 x 5) / (10 x 5) + (7 x 2) / (25 x 2)
= - 10/50 + 14/50
= 4/50
= (2 x 2) (2 x 25)
= 2/25
- 7/15 x (- 5/21)
= 35/315
= (35 x 1) / (35 x 9)
= 1/9
-7/3 : - 21/6
= - 7/3 x - 6/21
= 42/63
= (21 x 2) / (21 x 3)
= 2/3.
Réponse :
Explications étape par étape
Bonjour
Calculer :
1 - 7/3
= 3/3 - 7/3
= (-4/3)
-2/10 + 7/25
= (-2 x 5)/(10 x 5) + (7 x 2)/(25 x 2)
= -10/50 + 14/50
= 4/50
= (2 x 2)/(2 x 25)
= 2/25
-7/15 x (-5/21)
= 7/21 x 5/15
= 1/3 x 1/3
= 1/9
-7/3 : (-21/6)
= 7/3 x 6/21
= 7/21 x 6/3
= 1/3 x 2
= 2/3