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2y 3 1 9
2y 3 1 9 pictures 5
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2y 3 1 9
3 2y 1 9 4y 7
9 x 1 )+( 2y 3 )u003d- 2
10y 9 1 3 2y 1 9
9 1 2y 3 4y 8
1 2y 8 3 9 2
9 4x 1 2y u003d- 3
1 3 6y 9 )u003d- 2y 13
9 1 2y )+ 3 3 y
2y 3 1 9
