Question

Solve the following system.
x - y = 10
x + y = 8
Answer
(9, -1)
(9, 1)
(-1, 9)
(-9, 1)

Answer 1

Check out your last question I showed you how to solve these types of questions

Answer 2

(9,-1)

Answer 3

x = 10 + y
so
10 + y + y = 8
2y/2 = -2/2
y = -1
therefore
x - 1 = 8
x = 9

therefore,
(9,-1)
as (x,y)

These questions are easy I hope you can follow me so you dont need help anymore with them