1,5 •1,6 + x+0,6=40

Let's solve the equation step by step:

1. Start with the equation:

   \[ 1.5 \cdot 1.6 + x + 0.6 = 40 \]

2. Calculate \( 1.5 \cdot 1.6 \):

   \[ 1.5 \cdot 1.6 = 2.4 \]

3. Substitute that back into the equation:

   \[ 2.4 + x + 0.6 = 40 \]

4. Simplify the left side. Combine \( 2.4 \) and \( 0.6 \):

   \[ 2.4 + 0.6 = 3.0 \]

   So, now the equation is:

   \[ 3.0 + x = 40 \]

5. To isolate \( x \), subtract \( 3.0 \) from both sides:

   \[ x = 40 - 3.0 \]

   \[ x = 37.0 \]

Thus, the value of \( x \) is \( 37.0 \).