1) (- 2 - 3 + 4 ) . 5 - 9 . ( - 2 - 6 ) = - 1 . 5 - 9 . ( - 8 ) = - 5 - 9 .( - 8 ) = - 5 + 72 = +67
2) ( - 5 - 10 - 32 ) . ( 4 -8 - 16 ) = - 47 . ( - 20 ) = + 940
3) - 2 + 3 . 5 - 7 . ( - 3 + 2 - 8 ) - 4 = - 2 + 3 . 5 - 7 . ( - 9 ) - 4 = - 2 + 3 . 5 + 63 - 4 = - 2 + 15 + 63 - 4 = ( 63 + 15 ) - ( 4 + 2 ) = 78 - 6 = +72
4) ( 2 - 10 ) . ( 6 - 3 ) - ( - 8 - 2 ) . ( - 9 - 7 ) = - 8 . 3 - ( + 8 + 2 ) . ( - 16 ) = - 24 - ( 10 ) . ( 16 ) = - 24 - 160 = -184
5) 15 + 16 . 2 - 3 . ( 5 . 2 + 4 - 3 . 2 ) - [ 2 + 2 . ( - 2 ) - 9 ] . ( - 5 ) = 15 + 16 . 2 - 3 . ( 10 + 4 - 6 ) - [ 2 - 4 - 9 ] . ( - 5 ) =15 + 16 . 2 - 3 . 8 - [ 2 - 4 - 9 ] . ( - 5 ) = 15 + 16 . 2 - 24 - [ 2 - 4 - 9 ] . ( - 5 ) = 15 + 16 . 2 - 24 - 2 + 4 + 9 . ( - 5 ) =15 + 32 - 24 - 2 + 4 - 45 = ( 15 + 32 + 4 ) - ( 24 + 2 + 45 ) =51 - 71 = -20
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