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2 1 2x 3 7
2 1 2x 3 7 pictures 5
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2 1 2x 3 7
6x 5 7 2x 1 3 2
5 3 1 2x 2 )u003d- 7
7 x 5 )+ 1 2 3 2x 1
4x 7 1 2 2x 3
2 3x 3 1 2x 7
3 x 2 )- 2x 1 )u003d 7 verify
1 2 x 8 )u003d 3 2x 7
1 2x 7 2 3x 8 3 2 x 4
3(x+2)-2x-1)u003d7
2 1 2x 3 7
