Answer:
x-2
Step-by-step explanation

eliminate (x+3) from top and bottom leaving (x-2)
Can you explain a little more
Yes and no you do not use the slash you use ^
We know that
<span>1) Kayla originally has 64b dollars
</span>2) <span>She gave 1/8 of it to Luke-----> (1/8)*64b=8b
in this moment Kayla has------> 64b-8b=56b
3) </span>Kayla spent $45
in this moment Kayla has------> 56b-$45
therefore
the answer is
(56b-$45)