Answer:
x - 37.50 = 73.29
Explanation: This would be the equation used to find saturday's sales because the question specified that sunday's sales were $37.50 less than saturday's. So we just need to find out the value we are subtracting the 37.50 dollars from.
It would work out like this:
x - 37.50 = 73.29
x = 73.29 + 37.50 (Bring the value over, change the sign)
x = 110.79