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2x 1 6x 13
2x 1 6x 13 pictures 5
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2x 1 6x 13
2x 13 3 6x 1 4
2x 6y 1 6x 2y 13
12 5 2x 1 13 2x 6x 8
x 13 2x 1 6x 7
6x 1 2x x 13
5 2x 1 )u003d 6x 13
2x 1 6x 13
