5x+3y=4
3x+4y=9
Simultaneously
eliminate y by rewriting and subtracting:
20x+12y = 16
9x+12y = 27
------------------
11x = -11
x = -1
so, y = 3
3x+4y=9
Simultaneously
20x+12y = 16
9x+12y = 27
------------------
11x = -11
x = -1
so, y = 3