204:{80-[70:2-(2³ +3.5)]} + 2023⁰

=204:{80-[70:2-(8+3.5)]} +1

=204:{80-[70:2-23]} +1

=204:{80-12} +1

=204:(68+1)

=3

Lời giải:

$=204:[80-(35-23)]+1=204:68+1=3+1=4$

d) 204:{80-[70:2-(2³ +3.5)]} + 2023⁰

^{= 204 :{ 80 -[ 70 : 2 - ( 8 + 3 . 5)]} + 1}

⁼ 204 :{ 80 -[ 70 : 2 - ( 8 + 15)]} + 1

=204 :{ 80 -[ 70 : 2 -23]} + 1

=204 :{ 80 -[ 35 - 23]} + 1

= 204 :{ 80 -12} + 1

= 204 : 68 + 1

= 3 + 1

= 5

Lời giải:

c. $=20:(-2)+12.5=-10+60=50$

d. $204:[80-(35-23)]+1=204:68+1=3+1=4$

c. 

d. 

a, 18.(-24) +  35.42 - 18.76  + 35.(-142)

=  [ 18.(-24) - 18.76] + (35.42 + 35(-142)]

= -18.[ 24 + 76]  - 35.( 142 - 42)

= -18.100  - 35. 100

= - 100.(18 + 35)

= - 100. 53

= - 5300

h,   104 : (-13) - [56 - 220 : (-4)]

  = 104 : (-13)  - [ 56 + 55]

= -8 - 111

= - 119 

j; 1010 : {2500 : [550 - (4.53 - 23.25)]}

 = 1010 : {2500 : [550 - (212 - 575)]}

= 1010 : {2500 : [550 + 363]

= 1010 : { 2500 : 913}

= 1010 : \(\dfrac{2500}{913}\)

= 1010 x \(\dfrac{913}{2500}\)

= 368,852

23+23+23-23-46x0+412

=23x3-23-0+412

=69-23+412

=46+412

=458.

23 + 23 + 23 - 23 - 46 x 0 + 412

= 46 + 23 - 23 - 0 + 412

=46 + 0 - 0 + 412

=46 + 412

=458

23 + 23 + 23 - 23 - 46 x 0 + 412 

= 23 + 23 + 23 - 23 - 0 + 412

= 46 + 0 - 0 + 412

= 46 + 412

= 458

ai tk mk mk tk lại cho .

\(\left(7x-11\right)^3=2^5\cdot5^2+200\cdot2023^0\\ \left(7x-11\right)^3=32\cdot25+200\cdot1\\ \left(7x-11\right)^3=1000\\ \left(7x-11\right)^3=10^3\\ 7x-11=10\\ 7x=21\\ x=\dfrac{21}{7}=3\)

Lời giải:

$(7x-11)^3=2^5.5^2+200.2023^0=32.25+200=1000=10^3$

$\Rightarrow 7x-11=10$

$\Rightarrow 7x=21$

$\Rightarrow x=3$

Quy ước: \(x^0=1\)

Đề bài: \(\left(\dfrac{5}{17}-\dfrac{8}{33}\right)-\left(\dfrac{25}{33}-\dfrac{12}{17}\right)-2023^0\)

\(=\dfrac{5}{17}-\dfrac{8}{33}-\dfrac{25}{33}+\dfrac{12}{17}-1\)

\(=\left(\dfrac{5}{17}+\dfrac{12}{17}\right)-\left(\dfrac{8}{33}+\dfrac{25}{33}\right)-1\)

\(=1-1-1\)

\(=-1\)

=(5/17-8/33)-(25/33-12/17)-2023^0

=5/17-8/33-25/33+12/17-1

=(5/17+12/17)+(-8/33-25/33)-1

=1+(-1)-1

=-1

Nhớ tick cho mình nha pls

a: =-14+8

=-6

b: =36:3*4-45+1

=48-45+1

=49-45

=4

a) -6

b) 4