27 [ 15 ( 52 3 ) 5 ] ( 73 )

Escribe tu problema de matemáticas... 27 - [ 15 ( 5*2 - 3 ) 5 ] ( 7*3 )

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27 - [15 (5 * 2 - 3) 5] (7 * 3)

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27 [ 15 ( 5*2 3 ) 5 ] ( 7*3 )