Answer:
Expression for Larry will be;

Expression for Zach will be;

Step-by-step explanation:
Given:
Larry gets $7 for each of the 3 flower beds he weeds and Y dollars to edge a yard.
Amount for each flower bed he weeds = $7
Number of flower bed he weeds = 3
Total amount he gets for 3 flower bed he weeds = 
Amount earn to edge a yard = Y
Total amount Larry will earn = $21 + $Y
Now Zach will get $25 to clean a garage and Y dollars to wash a car.
Amount earned to clean garage = $25
Amount earned to wash as car = $Y
Total Amount Zach will earn = $25 + $Y
The Both have to make X dollars to meet their goals.
Expression for Larry will be;

Expression for Zach will be;
