Bonjour j'ai besoin d'aide svp merci d'avance RESOLVEZ LES EQUATIONS: 2) 1/4 = 4c/3 - 2/5 3) 2d - 5(d-3) = -3(d-5) 4) 5e+8/3 = 12e+1/2

Bonjour,

2) 1/4 = 4c/3 - 2/5

1/4 +2/5 = 4c/3

5/20 + 8/20 = 4c/ 3

13/20 = 4c/3

(13*3)/20 = 4c

39/20 = 4c

(39/20 / 4 = C

39/ (20*4) =c

39/ 80 = c

3) 2d - 5(d-3) = -3(d-5)

2d -5d+15 = -3d+15

-3d +15 =-3d+15

-3d+3d = 15-15

0=0

d= 0

4) 5e+8/3 = 12e+1/2

8/3 -1/2 = 12e -5e

16/6 -3/6 = 7e

13/6 = 7e

e=  (13/6 )/7

e= 13/(6*7)

e=13/ 42