2x + 3y = 14 3x - 4y = 4
2x + 3y = 14 ---> x 3 ---> 6x + 9y = 42
3x - 4y = 4 ---> x -2 ---> -6x + 8y = -8
17y = 34
y = 2
If y = 2: 2x + 3y = 14 ---> 2x + 3(2) = 14 ---> 2x + 6 = 14
2x = 8
x = 4