-15,6+(-28,4) -26,4+(-3,6) 18,7+(-3,3) -19,2+(-27,8) -43,1+(-16,9) 27,5+(-27,5)

Let's calculate each of the expressions step by step:

1. -15.6 + (-28.4): \[ -15.6 - 28.4 = -44.0 \]

2. -26.4 + (-3.6): \[ -26.4 - 3.6 = -30.0 \]

3. 18.7 + (-3.3): \[ 18.7 - 3.3 = 15.4 \]

4. -19.2 + (-27.8): \[ -19.2 - 27.8 = -47.0 \]

5. -43.1 + (-16.9): \[ -43.1 - 16.9 = -60.0 \]

6. 27.5 + (-27.5): \[ 27.5 - 27.5 = 0.0 \]

So, the results for each expression are:

1. -44.0
2. -30.0
3. 15.4
4. -47.0
5. -60.0
6. 0.0