Răspuns :
-6x - 5y = -4
2x - 3y = 17/15 /*3
-6x -5y = -4
6x -9y = 17/5
----------------- (+) folosesc metoda reducerii
/ -14y = 17/5-4 amplifici pe 4 cu 5
-14y = 17/5 - 20/5
-14y = -3/5
y = 3/5 * 1/14
y = 3/70
deci -6x - 5*3/70 = -4
-6x -3/14 = -4
-6x = -4+3/14
-6x = -56/14 + 3/14
-6x = -53/14
x = 53/14 * 1/6
x = 53/84