20,1*1,5-28,3-3+25,1-2*1,5

Let's solve the expression step by step:

The expression is: \[ 20.1 \times 1.5 - 28.3 - 3 + 25.1 - 2 \times 1.5 \]

1. Calculate \( 20.1 \times 1.5 \): \[ 20.1 \times 1.5 = 30.15 \]

2. Calculate \( 2 \times 1.5 \): \[ 2 \times 1.5 = 3 \]

3. Substituting into the expression: \[ 30.15 - 28.3 - 3 + 25.1 - 3 \]

4. Combine the terms:

   • First, compute \( 30.15 - 28.3 \): \[ 30.15 - 28.3 = 1.85 \]
   • Then subtract \( 3 \): \[ 1.85 - 3 = -1.15 \]
   • Add \( 25.1 \): \[ -1.15 + 25.1 = 23.95 \]
   • Finally, subtract \( 3 \): \[ 23.95 - 3 = 20.95 \]

The final result is: \[ \boxed{20.95} \]