Question 319559
 x + 2y = 3
4x + 5y = 6

x*5 + 2y*5 = 3*5
4x*2 + 5y * 2 = 6*2

5x + 10y = 15
8x + 10y = 12

-3x=3
 -3x/-3 = 3/-3
x=-1