9+2448-(119-(23-6)):23-4=2448

9+/2448-(119-(23-6))/:23-4

=9+/2448-119+23-6/:23-4

=9+2346:23-4

=9+102-4

=107

chuc ban luon hoc tot! ma ban co the ket ban voi min dc ko?

Tính nhanh mà

2448 : [119 − (23 − 6)]

= 2448 : (119 – 17)

= 2448 : 102 = 24

Tính:

\(2448:\left[119-\left(23-6\right)\right]\)

\(=2448:\left[119-17\right]\)

\(=2448:102\)

\(=24\)

___________________________

\(\left\{789+\left[324:\left(78-66\right)\right]\right\}+273\)

\(=\left\{789+\left[324:12\right]\right\}+273\)

\(=\left\{789+27\right\}+273\)

\(=816+273\)

\(=1089\)

Chúc bạn học tốt

a) 80- (4.52 - 3.23)

= 80- ( 208 -69 )

=80+139  quy tắc đổi dấu trừ tước dấu ngoặc

= 219

e: Ta có: \(2448:\left[119-\left(23-6\right)\right]\)

\(=2448:\left(119-23+6\right)\)

\(=2448:102=24\)

27.49+27.52-27

=27.(52+49)-27

=27.100-27

=2700-27

=2773

2448:[119-(23-6)]

=2448:[119-17]

=2448:102

=24

(2736-75)-2736

=2736-75-2736

=2736-2736-57

=0-75

=-75

k nhé mk nhanh nhất

27 x 49 + 27 x 52 - 27

= 27 x (49 + 52 - 1)

= 27 x 100

= 2700

2448 : [119 - (23-6)]

= 2448 : (119 - 17)

= 2448 : 102

= 24

(2736 - 75) - 2736

= (2736 - 2736) - 75

= 0 - 75

= -75

 27x49+27x52-27

=27x49+27x52-27x1

=27x(49+52-1)

=27x100

=2700

 2448:[119-(23-6)]

=2448:[119-17]

=2448:102

=24

 (2736-75)-2736

=2736-2736-75

=0-75

=-75

a) 3.5³ - 16 : 2² = 3 . 125 - 16 : 4 = 375 - 109 = 266.

b) 2448 : [119 : (23-6)] = 2448 : (119 : 17) = 2448 : 7 = 349,714...

c: \(2448:\left[199-23-6\right]\)

\(=2448:90\)

\(=\dfrac{136}{5}\)

a) \(5^6:5^4+2^3.2^2-1^{2017}\)

\(=5^2+2^5-1=25+32-1=56\)

a,

7x – 8 = 713

7x = 713 + 8

7x = 721

x = 721 : 7

x = 103.

b,

2448:[119-(x-6)]=24

119-(x-6)= 2448 : 24

119-(x-6)= 102

x-6= 119-102

x-6= 17

x=17+6

x=23

c,

2016 - 100.( x +11 ) = 2^7 : 2^3
2016 - 100.(x+11) = 2^4
2016 - 100.(x+11)=16
100.(x+11) = 2016-16
100.(x+11)=2000
x+11=2000:100
x+11=20
x = 20-11
x = 9