20 watches are made since 385 = 15n + 85. 385 - 85 is 300 and 300 divides by 15 is 20.
Answer:

Step-by-step explanation:
y = 3 - xy
Let x = 1
y = 3 - (1)y
Expand brackets.
y = 3 - y
Add y to both sides.
2y = 3
Divide both sides by 2.
y = 3/2
Answer:
x = 5 units
Step-by-step explanation:
Hello!
We know that the area of a rectangle is the length multiplied by the width.
- The length is given as 6
- The width is given as 2x + 8
- The area is given as 108
We can simply create an expression to solve for x.
Solve:
- Area = length x width
- 108 = 6(2x + 8)
- 108 = 12x + 48
- 60 = 12x
- x = 5
The value of x is 5 units.
701 = 21 + 68w
701-21= 680
680/68=10
w=10