5m Zen
7y 2x 3
7y 2x 3 pictures 5
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7y 2x 3
x 6y 3 2x 7y 13
6x 7y 3 2x 8
2x 7y x y 3
6x 7y 3 2x 2y 9
2x 5 2x 7y 3 8
2x+7y u003d 3 and xu003d-4y
2x y 7y 2x 3
y u2264 7y 2x 3
7y 2x 3 4x y
7y 2x 3
