# How do you find the solution of the system of equations x + 3y = 19  and x - y = -1 ?

Apr 4, 2018

$x = 4$
$y = 5$

#### Explanation:

$x + 3 y = 19$ --- (1)
$x - y = - 1$ --- (2)

(1) - (2)

$4 y = 20$
$y = 5$ --- (3)

Sub (3) into (2)

$x - 5 = - 1$
$x = 4$