Let's solve each equation step by step:

1) -5(-0.4) = 2
2) 0.84 / (-0.42) = -2
3) -1 0.7 (-x) = -35 / 0.5
-0.7(-x) = -70
-x = -70 / -0.7
x = 100
4) 5.4(-x)=0.6(-36)
-5.4x = -21.6
x = -21.6 / -5.4
x = 4
5) -x 0.25 = -15 * 25
-0.25x = -375
x = -375 / -0.25
x = 1500

Therefore, the solutions for each equation are:
1) 2
2) -2
3) x = 100
4) x = 4
5) x = 1500