Deo went shopping with XY dollars, he spends Z dollars. How much is he left with?

 XY - Z

The value of Z cannot be larger than XY.

For instance, if he went shopping with XY = 25 dollars and spent Z = 9 dollars, then he's left with XY-Z = 25-9 = 16 dollars.

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

i hope this is what you were looking for.

see attached graph