5m Zen
X + 2y u003d 0 and 3x + 4y u003d 4
X + 2y u003d 0 and 3x + 4y u003d 4 pictures 5
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X + 2y u003d 0 and 3x +
X + 2y u003d 0 and 3x + 4y u003d 4
