a: =321-21*[(2*27+16:32)-52]

=321-21*[2+0,5]

=321-21*2,5=268,5

b: \(=\dfrac{160}{17+\left[9\cdot5\left(14+8\right)\right]}\)

\(=\dfrac{160}{17+45\cdot22}=\dfrac{160}{1007}\)

c: =100*9:3^2=100

d: =2*27+143:(36-25)

=54+143:11

=54+13=67

3: =231+26-209-26=22

4: =19(25+30+45)=19x100=1900

5: =-50+19+143+79-25-48

=-75+95+98

=98+20=118

\(160:\left\{17+\left[3^3\cdot5-\left(14+2^7:2^4\right)\right]\right\}\)

\(=160:\left\{17+\left[27\cdot5-\left(14+2^3\right)\right]\right\}\)

\(=160:\left\{17+\left[135-\left(14+8\right)\right]\right\}\)

\(=160:\left[17+\left(135-22\right)\right]\)

\(=160:\left(17+113\right)\)

\(=160:130\)

\(=\dfrac{16}{13}\)

#Urushi☕

160 : { 17 + [ 3 3 ⋅ 5 − ( 14 + 2 7 : 2 4 ) ] } = 160 : { 17 + [ 27 ⋅ 5 − ( 14 + 2 3 ) ] } = 160 : { 17 + [ 135 − ( 14 + 8 ) ] } = 160 : [ 17 + ( 135 − 22 ) ] = 160 : ( 17 + 113 ) = 160 : 130 = 16 13

160:{|-17| + [3² .5-(14 + 2¹¹: 2⁸)]}

=160:{17+[9. 5- (14+ 2³)]}

=160:{17+[45 - ( 14+ 8 )]}

=160:{17+[45 - 22 ]}

=160:{17+23}

=160: 40

=4

Vậy biểu thức có gt là : 4

tích cho mk nha

good luck !

=160:{|-17|+[3².5-(14+8)]}

=160:{|-17|+[3².5-22]}

=160:{|-17|+[9.5-22]}

=160:{|-17|+[45-22]}

=160:{|-17|+23}

=160:{17+23}

=160:40

=4

Rối não :)) Thề ngu phần số âm cực =))

bn đùa à dấu "^" là dấu gì trong toán học

160: 17+[ 9 . 5 -14+ 8]

=160:17+19

=9,4+19

=28,4

a) 35-{12-[-14+(-2)]}.

= 35 - 12 + 14 + 2

= 35 + 14 - (12 - 2)

= 49 - 10

= 39

b) 160:{17+[9×5-(14+2048:256)]}.

= 160: {17 + [45 - (14 + 8)]}

= 160: {17 + [45 - 22)]}

= 160:{17 + 23}

= 160: 40 = 4

c) 2021⁰-{225:[20×15-8×25]-25}.

= 1 - {225:[300 - 200] - 25}

= 1 - {225 : 100 - 25}

= 1 - {2,25 - 25}

= 1 + 25 - 2,25

= 23,75

_Tao quên cách làm rồi chi ạ ( Bi = Jin :)) )