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1 2 x 5 x 7 x 4
1 2 x 5 x 7 x 4 pictures 5
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1 2 x 5 x 7 x 4
4 x 5 )+ 2 x 9 )u003d 3 x 7 )- 1
(( 2 x )( x 7 x 5 u22C5 x 4 )u003d 1
3 5 x 7 x 4 1 2 5 4 x 8
e (( 2 x )( x 7 x 5 )( x 4 )) 1
solve 2 x )( 7 x )/( 5 x )( 4 x )u003d 1
2 x )( x 7 )/( x 5 )( x 4 )u003d 1 verify
5 4 x 1 7 2 x 9 4 x 7
7 x 4 2 3 x 5 2 4 x 1 )( x 1 )- 2
x 2 7 x 1 8 x 4 5 x 3 6
1 2 x 5 x 7 x 4
