1) 10 - 90 - 81x - 8 + x= 0
-88 - 80 x = 0
80x = - 88
x = - 1,1
2) -1 + 56 - 48 x - 2x - 6 = 0
49= 50 x
x= 0,98
3) -2 + 3 + 6x + 2x - 3 = 0
-2 = 8x
x = - 0,25
4) -3x + 4 + 10 + 35 + 5x = 0
49 = - 2x
x = - 24,5
5) 5x -4 - 4 + 15 - 6x = 0
-1x + 7= 0
x = 7
6) 4 - 10 - 8x + x -1 = 0
-7 - 7x = 0
- 7 = 7x
x = -1