1)1 - 4(x + 1) = 1,8 - 1,6x
1 - 4x - 4 = 1,8 - 1,6x
-2,4x = 4,8
x = -2
2)3(0,5x - 4) + 8,5x = 10x - 11
1,5x - 12 + 8,5x = 10x - 11
0x ≠ 1
1)1 - 4(x + 1) = 1,8 - 1,6x
1 - 4x - 4 = 1,8 - 1,6x
-2,4x = 4,8
x = -2
2)3(0,5x - 4) + 8,5x = 10x - 11
1,5x - 12 + 8,5x = 10x - 11
0x ≠ 1