Answer: $117
Step-by-step explanation:
Let x be the money Omar brought with him.
Given : Omar spends $63 on souvenirs during his vacation. That is 35% of the money he brought with him.
We can rewrite 35% as 0.35.
According to the question, we have the following equation

Thus, the amount of money he brought with him = $180
Now, after spending $63 , Money he left to spend = $180- $63=$117
Hence, He has $117 left to spend.