50-45:5-3+16:2.5=

Решение:

1. $$45:5 = 9$$


2. $$9 \cdot 3 = 27$$


3. $$16:2 = 8$$


4. $$8 \cdot 5 = 40$$


5. $$50 - 27 = 23$$


6. $$23 + 40 = 63$$

Ответ: 63