Let's solve the equation step by step:

Distribute the coefficients:
0.4x - 3.6 - 0.3x - 0.6 = 0.7

Combine like terms:
0.4x - 0.3x - 3.6 - 0.6 = 0.7
0.1x - 4.2 = 0.7

Add 4.2 to both sides:
0.1x = 4.9

Divide by 0.1 to isolate x:
x = 4.9 / 0.1
x = 49

Therefore, the solution to the equation is x = 49.