Answer:
The required equation is x - $42.50 = $124.99 and the cost at local store is $167.49
Explanation:
Consider the provided information.
It is given that the cost of skateboard is $124.99.
Which is $42.50 less than the price at a local store.
Let x represents the price of skateboard at a local store.
According to the question, the online costs $124.99 which is $42.50 less than the price at a local store".
Thus the equation will be:

Now solve the equation for x.



Hence, the cost at the local store would be $167.49