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7x 1 5 x
7x 1 5 x pictures 5
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7x 1 5 x
9 1 x ) - 7x 5
7x 5 x 1 )u003d- 5 12x
5 x 4 )- 1 u003d- 7x 3
7x 5 2 x 1
7x 5 4 x 1
7x 5 (- x 1 )u003d- 35
3x 5 x 1 7x 27
2 7x 1 )u003d 5 x 4
solve 7x 1 5 x
7x 1 5 x