5m Zen
X 3y x 3
X 3y x 3 pictures 5
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X 3y
X 3y x 3
x 3y 3 * x 3 4x 2
x 5y 3 x 3y
x y 3 x 3y u003d- 29
x 3y u003d- 15 x u003d- 3 substitution
x 3y 3 x 2
x y 3 x 3y 13
x y 3 x 3y u003d- 9
y 3 x 3y x 5
y x 3y x 3
x 3y x 3
