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1 4x 1 2 7
1 4x 1 2 7 pictures 5
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1 4x 1 2 7
4x 2 1 3 7 1 6
7 8x 1 2 1 4x
1 2x 7 2 1 4x 2
1 4 4x 1 )u003d- 1 7 2 7
1 2 2 4x )u003d 7 x 1 )- 2
7/8 u2265 1/4 x+1/2
7 1 3x 5 1 2 4x 1 1 6
19 5 1 4x 1 2 7 5x
7/81/4 x+1/2
1 4x 1 2 7
