![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](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)
\(107-\left\{38+\left[7.3^2-24:6+\left(9-7\right)^3\right]\right\}:15\)
\(=107-\left\{38+\left[7.3^2-24:6+2^3\right]\right\}:15\)
\(=107-\left\{38+\left[7.3^2-4+2^3\right]\right\}:15\)
\(=107-\left\{38+\left[63-4+2^3\right]\right\}:15\)
\(=107-\left\{38+\left[59+2^3\right]\right\}:15\)
\(=107-\left\{38+67\right\}:15\)
\(=107-105:15\)
\(=107-7\)
\(=100\)
107 – {38 + [7.32 – 24 : 6+(9 – 7)3]}:15
= 107 - {38+ [7.32 - 24 : 6 + 23 ]} : 15
= 107 - {38 + [ 7.9 - 24 : 6 + 8]} :15
= 107 - {38+[ 63 - 4 + 8]} : 15
= 107 - {38 + 67} : 15
= 107 - 105 : 15
= 107 - 7
= 100
17) 10 – [(82 – 48).5 + (23.10 + 8)] : 28 - 70
= 10 - [(64 - 48).5 + (8.10 +8)] : 28 - 70
= 10 - [16.5 + 88] : 28 - 70
= 10 - [80 + 88] : 28 - 70
= 10 - 168 : 28 - 70
= 10 - 6 - 1
= 3
nếu sai câu nào mong bạn thông cảm ^^
![](https://rs.olm.vn/images/avt/0.png?1311)
k)(-37)+14+26+37
=(-37)+37+14+26
=0+14+26
=40
l)15+23+(-25)+(-23)
=15+(-25)+23+(-23)
=-10+0
=-10
n)25+37-48-25-37
=25-25+37-37-48
=0+0-48
=-48
o)24.(16-5)-16.(24-5)
=24.16-24.5-16.24-16.5
=0-24.5-16.5
=0-(24-16).5
=0-8.5
=0-40
=-40
p)31.(-18)+31.(-81)-31
=31.(-18)+31.(-81)+31.(-1)
=31.[-18+(-81)+(-1)]
=31.(-100)
=-3100
q)-48+48.(-78)+48.(-21)
=48.(-1)+48.(-78)+48.(-21)
=48.[(-1)+(-78)+(-21)]
=48.(-100)
=-4800
r)(7.3-3):(-6)
=(7.3-1.3):(-6)
=(6.3):(-6)
=-3
s)-3.7-4.(-5)+1
=-21-(-20)+1
=-20-(-20)
=0
t(6.8-10:5)+3.(-7)
=(48-2)+(-21)
=46+(-21)
=25
Viết mỏi cả tay rồi.tick đi nhé
![](https://rs.olm.vn/images/avt/0.png?1311)
\(3^{^{ }2}\) . 5 + 23.10 - 81: 3
= 9.5 + 8.10 - 27
= 45 + 80 - 27
= 125 - 27
= 98
\(3^2\cdot5+2^3\cdot10-81:3\)
\(=9\cdot5+8\cdot10-3^4:3\)
\(=40+80-3^3\)
\(=120-27\)
\(=93\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(10-\left[\left(8^2-48\right)\cdot5+\left(23\cdot10+8\right):28\right]\)
\(=10-\left[\left(64-48\right)\cdot5+\left(230+8\right):28\right]\)
\(=10-\left(16\cdot5+238:28\right)\)
\(=10-\left(80+\dfrac{17}{2}\right)\)
\(=10-80-\dfrac{17}{2}\)
\(=-17-\dfrac{17}{2}\)
\(=-17-8,5\)
\(=-25,5\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 1125 - (374 + 1125) + (-65 + 374)
= 1125 - 374 - 1125 + (-65) + 374
= (1125 - 1125) + (-374 + 374) + (-65)
= 0 + 0 + (-65)
= -65
b) -23. 63 + 23 . 21 - 58 . 23
= 23 .(-63) + 23 . 21 - 58 . 23
= 23 . [(-63) + 21 - 58]
= 23 . (-100)
= -2300
c) -2003 + (-21 + 75 + 2003)
= -2003 + (-21) + 75 + 2003
= (-2003 + 2003) + (-21) + 75
= 0 + 54
= 54
d) 942 - 2567 + 2563 - 1942
= (942 - 1942) + (-2567 + 2563)
= -1000 + (-4)
= -1004
e) 12 - 12 + 11 + 10 - 9 + 8 - 7 + 5 - 4 + 3 + 2 - 1
= 0 + 11 + 1 + 1 + 1 + 3 + 1
= 18
![](https://rs.olm.vn/images/avt/0.png?1311)
-23 x 63 + 23 x 21 - 58 x 23
= 23 x ( -63 + 21 - 58 )
= 23 x ( -100 )
= -2300