Answer: 11
Step-by-step explanation:
We need to start by evaluating the problem, we can simplify this equation so its easier to solve.
So the new equation will be [tex]56-17-43+15[/tex].
56 - 17 = 39
39 - 43 = -4
-4 + 15 = 11.
So [tex]56-17-43+15 = 11[/tex].
11 is the answer.
