Sagot :
2-5x = 1+6x
-5x-6x = 2+1
-11x = 3
-11x 3
------- = -------
-11 -11
x = -0.27
-5x-6x = 2+1
-11x = 3
-11x 3
------- = -------
-11 -11
x = -0.27
2-1=6x+5x
1=11x
x=11
-4+8x=3x-9
-4+9=3x-8x
5=-5x
x=-1
6x+4(2-5x)=7x
6x+8-20x=7x
8=7x+20x-6x
8=21x
x=21/8
1=11x
x=11
-4+8x=3x-9
-4+9=3x-8x
5=-5x
x=-1
6x+4(2-5x)=7x
6x+8-20x=7x
8=7x+20x-6x
8=21x
x=21/8