Question

What is the solution to this system of linear equations?

x + y = 4
x - y = 6
(4,6)
(6,4)
(5, -1)

Answer 1

Answ

c

Explanation:

Answer 2

(5, -1)

Explanation:

x + y = 4

x - y = 6

Add the equations to eliminate y

2x = 10----> x=5

Substitute this value in any equation

5 + y = 4 ----> y = 4-5 ----> y= -1