Answer:
Step-by-step explanation:
First of all, let us lay out the problem clearly:

This can be solved using a calculator, by first simplifying the individual fractions first, to decimals, then computing the addition and subtraction.
using your calculator, punch (-50 ÷ 54), your results should be:
-50 ÷ 54 = -0.93
Next, punch ( 40 ÷ 100), you should get 0.4
Now, join the individual results together to get:
- 0.93 - 0.40 + 1.65
Finally, still using the calculator, input the values as shown:
- 0.93 - 0.40 + 1.65 = 0.32