Sagot :
Bonsoir,
a) 6x + 1 = 2x + 6
6x-2x = 6-1
4x = 5
x= 5/4
c)2-5x = 1 + 6x
2-1 = 6x+5x
1 = 11x
x= 1/11
b) 5x - 8 = 2 + 3x
5x-3x = 2+8
2x = 10
x= 10/2 = 5
d) -4 + 8x = 3x - 9
8x-3x = -9+4
5x= -5
x= -5/5 = -1
Bonsoir,
Résoudre les équations suivantes :
a) 6x + 1 = 2x + 6
6x-2x= 6-1
4x= 5
x= 5/4 S= { 5/4 ]
c) 2-5x = 1 + 6x
-5x-6x= 1-2
-11x= -1
x= 1/11 S= { 1/11 ]
b) 5x - 8 = 2 + 3x
5x-3x= 2+8
x= 10/2
x= 5 S= { 5 }
d) -4 + 8x = 3x - 9
8x-3x= -9+4
x= -5/5
x= -1 S= { -1 }