Sagot :
Bonjour,
a) 3x + x = -7
4x = - 7
x = - 7/4
b) 6 - x = 4,3
- x = 4,3 - 6
- x = - 1,7
x = 1,7
c) -4x = -22
x = 22/4
x = 11/2.
bonjour
3 x + x = - 7
4 x = - 7
x = - 7/4
6 - x = 4 .3
- x = 4.3 - 6
- x = - 1.7
x = 1.7
- 4 x = - 22
x = 22/4 = 5.5