Answer:
z = 5/2y -1
Step-by-step explanation:
We observe that z has ...
- 1 added
- the sum multiplied by 2/5
To solve for z, we undo these operations in reverse order.

Answer:
radius = 21
Step-by-step explanation:
1. not equal to
2. equal to
3 16
Explanation
Factor the numerator and denominator and cancel the common factors.