5m Zen
X 2y 9 0 3x 4y 17 0
X 2y 9 0 3x 4y 17 0 pictures 5
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X 2y 9
X 2y 9 0 3x 4y 17 0
x+2y+9u003d0 3x+4y+17u003d0 cross multiplication
x 2y 9 0 3x 4y 17 0 substitution method
x 2y 9 0 3x 4y 17 0
