67-[8+7.3^2-24:6+(9-7)^3]:15
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![](https://rs.olm.vn/images/avt/0.png?1311)
đổi ra thì ta có:
67-[8+7.9-24:6+(9-7)^3]:15
=67-[8+63-4+2^3]:15
=67-[8+63- 4+8]:15
=67-[71-4+8]:15
=67-75:15
=67-5
=62
67 - [ 8 + 7 . 32 - 24 : 6 + ( 9 - 7 )3 ] : 15
= 67 - [ 8 + 7 . 9 - 4 + 23 ] : 15
= 67 - [ 8 + 63 - 4 + 8 ] : 15
= 67-[71-4+8]:15
= 67 - [ 67 + 8 ] : 15
= 67 - 75 : 15
= 67 - 5
= 62
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 49.(-34)+(-65).49-49 = 49. (-34-65-1)= 49. (-100)= -4900
b) -268-(-47-168)-147 = (-268 + 168) - (147 - 47)= -100 -100=-200
c) (-2)2.(-3)-[(-1)2024+8]:(-3)2 = 4. (-3) - [1 +8]:9 = -12 - 9:9 = -12 - 1 = -13
d) 67-[8+7.32 -24:6+(9-7)3]:15 = 67 - [8 + 7.9 - 4 + 23 ] : 15
= 67 - [8+63-4+8]:15 = 67 - 75:15 = 67 - 5 = 62
![](https://rs.olm.vn/images/avt/0.png?1311)
107-{38+[7.3^2-24:6+(9-7)^3]}:15
=107-{38+[7.9-24:6+23]} :15
=107-{38+[63-4+8]}:15
=107-{38+67}:15
=107-105:15
=107-7=7
Kết quả là 100 Tran Dinh Phuoc Son ơi,
107 -7 mà bằng 7 à ???😶😶😶😶😶
Nhưng cách làm thì đúng rồi đó 😋😋😋😋😋❣❣❣❣❣
![](https://rs.olm.vn/images/avt/0.png?1311)
ℓ. 500 – {5[409 – (2³.3 – 21)²] + 10³} : 15
= 500 - {5[409-(8.3-21)2]+103}:15
= 500-{5[409-(24-21)2]+1000}:15
= 500-{5[409-32]+1000}:15
= 500-{5[409-9]+1000}:15
= 500-{[5.400]+1000}:15
= 500-{2000+1000}:15
= 500-3000:15
= 500-200
= 300
m. 67 – [8 + 7.3² – 24 : 6 + (9 – 7)³] : 15
= 67 – [8 + 7.9 – 4 + 23] : 15
= 67 – [8 + 63 – 4 + 8] : 15
= 67 – [71 – 4 + 8] : 15
= 67 – [67 + 8] : 15
= 67 – 75 : 15
= 67 – 5
= 62
n. (–23) + 13 + (–17) + 57
= (–10) + [(–17) + 57]
= (–10) + 40
= 30
o. (–123) + |–13| + (–7)
= [(–123) + (–7)] + |–13|
= (–130) + 13
= (–117)
p. |–10| + |45| + (–|–455|) + |–750|
= 10 + 45 + (–455) + 750
= (10 + 45 + 750) + (–455)
= 805 + (–455)
= 350
q. –|–33| + (–15) + 20 – |45 – 40| – 57 = (–33) + (–15) + 20 – |5| – 57 = (–48) + (20 + 5 + 57) = (–48) + 82 = 34 h. 9.|40 – 37| – |2.13 – 52| = 9.|3| – |26 – 52| = 9.3 – |–26| = 27 – 26 = 1![](https://rs.olm.vn/images/avt/0.png?1311)
107{38 + [7.32 - 24:6 + (9 - 7)3]} : 15
= 107{38 + [7.9 - 24:6 + 23]} : 15
= 107{38 + [63 - 4 + 8]} : 15
= 107{38 + 67} : 15
= 107.105 : 15
= 11235 : 15
= 749
![](https://rs.olm.vn/images/avt/0.png?1311)
107- { 38 + [ 7.32 -24:6 + ( 9-7)3]} :15
= 107- {38+[ 7.9 - 4 + 23]} :15
=107 - {38 + [ 63 - 4 + 8 ]} :15
=107- { 38 + [ 59 +8 ]}:15
=107- {38 + 67} :15
=107 - 105 : 15
=107 - 7
= 100