--聽日交-- 各位知識朋友 , 入黎幫我手 ar !!! ( 數學F.1 ) (5)

1.（－４）＋｛－１１＋［１０－（－９）］－［（－３）＋２７］｝

＝－４＋｛－１１＋［１０＋９］－［－３＋２７］｝

＝－４＋｛－１１＋［１９］－［２４］｝

＝－４＋｛－１１＋１９－２４｝

＝－４－１６

＝－２０

1.（－４）＋｛－１１＋［１０－（－９）］－［（－３）＋２］｝
=（－４）＋｛－１１＋［１０+９］+ 1 ｝
=（－４）＋｛19＋ 1 －１１｝
= 9 - 4
= 5

.（－４）＋｛－１１＋［１０－（－９）］－［（－３）＋２７］｝
先解括號:.（－４）＋｛－１１＋［１０－（－９）］－［（－３）＋２７］｝
=(-4)+{-11+[10+9(負負得正)]-24}
=(-4)+{-11+19-24}
=-4+{-16}
=-4-16(正負得負)
=-20
咁就ko左..只要記住: 負負得正..正正得正...正負得負就咩問題都可以ko

（－４）＋｛－１１＋［１０－（－９）］－［（－３）＋２７］｝
= (-4)+[-11+19]-24
= (-4)+8-24
= (-4)-16
= -20

( - 4 ) + { - 11 + [ 10 + 9 ] - [ - 3 + 27 ] }

= ( - 4 ) +{ - 11 + 19 - 2 4 }

= ( - 4 ) + { 8 - 2 4 }

= ( - 4 ) + ( - 1 6 )

= - 4 - 16

= -20 (不知道對不對)^^

.（－４）＋｛－１１＋［１０－（－９）］－［（－３）＋２７］｝
=(-4)+(-11+19)-24
=(-4)+8-24
=(-4)+(-16)
=-20,,

=(-4) + { -11 + [19] - 24 }
=-4 + 16
=12

.（－４）＋｛－１１＋［１０－（－９）］－［（－３）＋２７］｝
= (-4)+(11+19-24)
= (-4)+6
= 2

1.（－４）＋｛－１１＋［１０－（－９）］－［（－３）＋２７］｝
=-4-11+(10+9)+(3-27)
=-15+19-24
=-20//