5m Zen
7 6x ) ( 5 4x
7 6x ) ( 5 4x pictures 5
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7 6x ) ( 5 4x
4x 5 7 x 1 )u003d 6x 7
4x 7 6x 5 2x
7 4x 5 )- 4 6x 5 )u003d- 91
6x 7 3x 2 4x 5 2x 3
y 3x 7 6x 5 4x 2 17
4x 7 6x 5 4x 14
solve 4x 7 6x 5 4x 4
7 6x (- 5 ))- 4x (- 3 2
7 6x )-( 5 4x
7 6x 5 4x 4
