1. (a-2b)-3(a-5b) 2.0,1(x+2)+0.2(x-4) 3). 0.2(x-1)+(2-x) 4. 0.5(1-0.-1) 5.(3x-4)-0.5(2x+2)

1.   = a - 2 b - 3 a + 15 b = - 2 a + 13 b
2.   =  0.1 x + 0.2 + 0.2 x - 0.8 =  0.3 x - 0.6
3.  =  0.2 x - 0.2 + 2 - x = - 0.8 x + 1.8
4 .  =  0.5 - 1 x - x + 1 = - 2 x + 1.5
5 .  =  3 x - 4 - 1 x - 1 = 2 x - 5