Since you want to know the values of x, and y, plug in 0 for the x and y when you are solving, first I would be finding x so I would plug in 0 for y
14x + 16(0) = 58
14x = 58
x = 4.14285714286
Next do the same for y
14(0) + 16y = 58
16y = 58
y = 3.625