-(1,7-2,3)

To simplify the expression \(-(1.7 - 2.3)\):

1. First, calculate the expression inside the parentheses: \(1.7 - 2.3 = -0.6\)

2. Now apply the negative sign outside the parentheses: \(-(-0.6) = 0.6\)

So, \(-(1.7 - 2.3) = 0.6\).