Answer: the 5 in the parentheses on the second line should be negative. Also, where did the 23 go?? That's a mistake too.
Step-by-step explanation: 3 - 8 = -5 so
23(2 - 4) + 5(3 - 8)
23(-2) + 5(-5)
(-46) + (-25)
-71
(at least, I think so unless there was a mistake in the equation)