5 * 5 - 35 + 21 - ( - 3 ) * ( - 3 ) * ( - 3 ) then: ( - 3 ) * ( - 3 ) = 9 ( - 3 ) * ( - 3 ) * ( - 3 ) = ( - 3 ) * 9 = - 27 - ( - 3 ) * ( - 3 ) * ( - 3 ) = - ( - 27 ) = 27 5 * 5 - 35 + 21 - ( - 3 ) * ( - 3 ) * ( - 3 ) = 25 - 35 + 21 + 27 = 38
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