Dear jmedsy,
-------A
--------B
By solving A and B you could easily get the answer.
Hello, jmedsy!
Exactly where is your difficulty?
Straight substitution will solve it.
Solve the system of equations where are variables and are constants:
. . .
From [1], we have: .
Substitute into [2]: .
Expand: .
Quadratic Formula: .
Substitute into [3]: .