Bonjour ercice 1 Niveau 1 soudre les équations suivantes : a. 7 = 14 5x = 30 b. -6x = -42 -2x = 4 c. 4x = 0,4 7x = 5,6 d. 7x = 4 6x = 16 8x = 92 - 9x = 90 4x =

Bonjour,

7x = 14

x = 14/7

x = 2

5x = 30

x = 30/5 = 6

-6x = -42

x = -42/-6

x = 42/6 = 7

-2x = 4

x = -4/2 = -2

7x = 5.6

x = 5.6/7

7x = 4

x = 4/7

6x = 16

x = 16/6 = 8/3

8x = 92

x = 92/8 = 11.5

-9x = 90

x = -90/9 = -10

4x = -3.2

x = -3.2/

3x = -4

x = -4/3