-2(3-4x)+5(2-1,6x)=4

Let's solve the equation step by step:

The given equation is:

\[ -2(3 - 4x) + 5(2 - 1.6x) = 4 \]

1. Distribute the constants:

   \[ -2(3) + (-2)(-4x) + 5(2) + 5(-1.6x) = 4 \]

   This gives:

   \[ -6 + 8x + 10 - 8x = 4 \]

2. Combine like terms:

   \[ (-6 + 10) + (8x - 8x) = 4 \]

   Simplifying this gives:

   \[ 4 + 0 = 4 \]

3. Simplify the equation:

   \[ 4 = 4 \]

This is a true statement, which means the equation is satisfied for all values of \(x\). Thus, the solution set is:

\[ \text{All real numbers} \quad (x \in \mathbb{R}) \]