5m Zen
2x y 9 x 3y
2x y 9 x 3y pictures 5
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2x y 9
2x y 9 x 3y
2x 3y 32 y x 9
2x y 5 0 x 3y 9 0
x 3y 9 2x y 4
x y 7 2x 3y 9 substitution method
x y 7 2x 3y 9
2x 3y u003d- 12 x y 9
2x y u003d- 9 x 3y 1
2x y 9 x 3y
2x y 9 x 3y u003d- 6 substitution
2x y 9 x 3y u003d- 6
