Sagot :

Vins

Réponse :

bonsoir

F = 7/18 x 2/7 - 9 x ( 5/3 - 1 )

F = 1/9 x 1/1 - 9 x ( 5/3 - 3/3 )

f = 1/9 - 9 x 2/3

F = 1/9 - 18/3

F = 1/9 - 54/3

f = - 53/3

G = 5/18 ( 1/15 + 4/5)

G = 5/18 ( 1/15 + 12/15)

G = 5/18 x 13/15

G = 65/270 = 13/54

H = ( 15/7 - 2/7 x 11/3 ) : 3 x ( - 2/3 + 1/5 )

H = ( 15/7 - 22/21 ) : 3 x ( - 10/15 + 3/15 )

H = ( 45/21 - 22 /21 ) : 3 x - 7/15

h = 23/21 : - 21/15

H = 23/21 x - 15/21

H = - 345/441 = - 115/ 147

Explications étape par étape :

reginegalmar

Réponse :

F = 7/18 * 2/7 - 9 * (5/3 - 1) = 14/126 - 9(5/3 - 3/3) = 14/126 - 9(2/3) = 2/18 - 18/3 = 1/9 - 6 = 1/9 - 54/9 = -53/9

G = 5/18(1/15 + 4/5) = 5/18(1/15 + 12/15 = 13/15) = 5/18 * 13/15 = 65/270 = 13/54

H = [(15/7 - 2/7 * 11/3)] / [3*(-2/3 + 1/5) = (15/7 - 22/21) / (3*(-10/15 + 3/15)) =    - 7/21 / -21/15 = -1/3 / -7/3 = 7/9

Explications étape par étape :