xy=14
4x+3y=29
from xy = 14, y = 14/x
sub into the other:
4x + 3(14/x) = 29
times x
4x^2 + 42 = 29x
4x^2 - 29x + 42 = 0
(4x - 21)(x - 2) = 0
x = 21/4 or x = 2
if x = 21/4, y = 14/(21/4) = 8/3
if x = 2, y = 7
xy=14
4x+3y=29
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