Answered

Bonjour à toi pouvez m'aider svp ? Je dois résoudre deux équations/:

1) 6 X (3x - 2/5)= 2 X ( 1/5 + x )
2) 1/6x - 2/3 = -5/3 x + 7/4

Sagot :

rico13

1)

6 * (3x - 2/5)= 2 * ( 1/5 + x )

18x - 12/5 = 2/5 + 2x

18x  - 2x = 2/5 + 12/5

16x = 14/5

x = (14/5)*(1/16)

x = (2*7/5)*(1/2*8)

x = (7/5)*(1/8)

x = 7/40

2)

(1/6)x - 2/3 = (-5/3)x + 7/4

(1/6)x + (5/3)x =  + 7/4 + 2/3

(1/6)x + (10/6)x =  + 7/4 + 2/3

(11/6)x =  29 / 12

x =  (29/12) * (6 / 11)

x =  29/22