2)3.1 - 9.3t + t = 0.4t - 5.6
-8.3t - 0.4t = -5.6 - 3.1
-8.7t = -8.7
t =1
4)0.2x - 0.6 - 1 = 0.5x + 1.5 - 0.4
0.2x - 0.5x = 1.1 + 1.6
-0.3x = 2.7
x = -9
6)2x - 10 + 3 = 2 - 3x -3
-2x + 3x = -1 + 7
x = 6
8)4n - 2n -14 = 2n - 2n + 2
4n - 2n = 2 + 14
2n = 16
n = 8