Question

Solve the systems for x and y. x+y=a x+b=y

Answer 1

x = a/2 - b/2

y = a/2 + b/2

Explanation:

x + y = a

x + b = y

x - y = -b

x + y = a

x - y = -b

________--

2y = a + b

y = a/2 + b/2

x + y = a

x - y = -b

________+

2x = a - b

x = a/2 - b/2