Answer :
5x - 14y = 22 ⇒ 5x - 14y = 22
-6x + 7y = 3 ⇒ 12x - 14y = -6
-7x = 28
-7 -7
x = -4
5x - 14y = 22
5(-4) - 14y = 22
-20 - 14y = 22
+ 20 + 20
-14y = 42
-14 -14
y = -3
(x, y) = (-4, -3)
-6x + 7y = 3 ⇒ 12x - 14y = -6
-7x = 28
-7 -7
x = -4
5x - 14y = 22
5(-4) - 14y = 22
-20 - 14y = 22
+ 20 + 20
-14y = 42
-14 -14
y = -3
(x, y) = (-4, -3)