0,4(7х-2)-1,6+1,7х

To simplify the expression \(0.4(7x - 2) - 1.6 + 1.7x\), follow these steps:

1. Distribute \(0.4\) to the terms inside the parentheses: \[ 0.4 \cdot 7x - 0.4 \cdot 2 = 2.8x - 0.8 \]

2. Substitute this back into the expression: \[ 2.8x - 0.8 - 1.6 + 1.7x \]

3. Combine the like terms:

   • For \(x\) terms: \(2.8x + 1.7x = 4.5x\)
   • For constant terms: \(-0.8 - 1.6 = -2.4\)

Putting it all together, the expression simplifies to: \[ 4.5x - 2.4 \]