résoudre ces équations        a.4x = 3/5           b.2/3 x = 7         c.6/5 x = -7/11                      d.-7 x = 4/-3             e.-3/2 x =5             f.

Bonjour,

Résoudre ces équations

a.4x = 3/5

4x/4 = (3/5)/4

x = 3/5 * 1/4

• x = 3/20

b.2/3 x = 7

2/3 x * 3/2 = 7 * 3/2

• x = 21/2

c.6/5 x = -7/11

6/5 x * 5/6 = -7/11 * 5/6

• x = -35/66

d.-7 x = 4/-3

-7x/-7 = (-3/4)/(-7)

x = 3/4 * 1/7

• x = 3/28

e.-3/2 x =5

-3/2 x * -2/3 = 5 * -2/3

• x = -10/3

f.-5/7 x = -2/-3

-5/7 x * -7/5 = 2/3 * -7/5

• x = -14/15

g.5x/7=0

5/7 x * 7/5 = 0 * 7/5

• x = 0

h.-3/2x=-7/11

-3/2 x * -2/3 = -7/11 * -2/3

• x = 14/33

i.-4/3=-5/-11x

5/11 x * 11/5 = -4/3 * 11/5

• x = -44/15