Question

What is the value of x in the solution to the following system of equations?

x − 2y = 2
3x + y = 6

Answer 1

i need cramer practice :)

x − 2y = 2
3x + y = 6

x = 6(-2)-2(1) / 3(-2) - 1(1)
= -12 -2 / -6 -1
= 14/7
= 2

if i did it right

Answer 2

by elimination we have:

x − 2y = 2
6x +2y = 12
------------
7x = 14

x = 2