Bonjour,

a.

- 5x + 2 = - 9x - 6

- 5x + 9x = - 6 - 2

4x = - 8

x = - 8/4

x = - 2

b.

18x - 8 = 40 - 25x

18x + 25x = 40 + 8

43x = 48

x = 48/43

Verified answer

Bonjour,

Résoudre les équations:

-5x+2= -9x-6

-5x+9x= -6-2

4x= -8

x= -8/4

x= -2

S= { -2 }

18x-8= 40-25x

18x+25x= 40+8

43x= 48

x= 48/43

x= 1.116

S= { 48/43 }