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2b 7 3b 4
2b 7 3b 4 pictures 5
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2b 7 3b 4
2 3b 7 )u003d 4 (- 2b 1
3b 4 2b 5 7
2b-7+3b+4-bu003d3 simplified
2b 7 3b 4
2b 7 3b 4 b 3
