Cách 1: Tính giá trị từng biểu thức trong ngoặc

Cách 2: Bỏ dấu ngoặc rồi nhóm các số thích hợp

a,  15 . { 32 : [ 6 - 5 + 5 ( 9 : 3 ) ] + 3 } - 2018 0

= 15.{32:[1+15]+3}–1

= 15.5–1

= 74

b,  25 . { 2 7 : [ 12 - 4 + 2 2 . 16 : 2 3 ] - 2 4 }

= 25.{128:[8+4.2]–16}

= 25.24

= 600

c,  2019 . { 101 - 1000 : [ 2 2 . 2 3 + 5 6 : 5 3 - 6 2 : 11 - 2018 0 ] }

= 2019.{101–1000:[(32+125–36):11–1]}

= 2019.{101–1000:[121:11–1]}

= 2019.{101–1000:10}

= 2019.1

= 2019

thu gọn 7^3*7^5

Oh no nhiều kí tự đặc biệt quá

dễ quá mình ko làm  đc 

Cách 1: = ( 36/6 - 4/6 + 3/6 ) - ( 30/6 + 10/6 - 9/6 ) - ( 18/6 - 14/6 + 15/6 )

            = 35/6 - 31/6 - 19/6

            = -5/2

Cách 2: = 6 - 2/3 + 1/2 - 5 - 5/3 + 3/2 -3 + 7/3 - 5/2

           = ( 6 - 5 - 3 ) + ( -2/3 - 5/3 + 7/3 ) + ( 1/2 + 3/2 - 5/2 )

           = -2 + 0 + -1/2

          = -5/2

Cách 2:

\(A=\left(6-\frac{2}{3}+\frac{1}{2}\right)-\left(5+\frac{5}{3}-\frac{3}{2}\right)-\left(3-\frac{7}{3}+\frac{5}{2}\right)\)

\(=\left(\frac{36}{6}-\frac{4}{6}+\frac{3}{6}\right)-\left(\frac{30}{6}+\frac{10}{6}-\frac{9}{6}\right)-\left(\frac{18}{6}-\frac{14}{6}+\frac{15}{6}\right)\)

\(=\frac{36}{6}-\frac{4}{6}+\frac{3}{6}-\frac{30}{6}-\frac{10}{6}+\frac{9}{6}-\frac{18}{6}+\frac{14}{6}-\frac{15}{6}\)

\(=\frac{36-4+3-30-10+9-18+14-15}{6}\)

\(=-\frac{15}{6}=-\frac{5}{2}\)

C₁: dễ nên tự làm nhé

C₂: \(A=\left(6-\frac{2}{3}+\frac{1}{2}\right)-\left(5+\frac{5}{3}-\frac{3}{2}\right)-\left(3-\frac{7}{2}+\frac{5}{2}\right)\)

\(=6-\frac{2}{3}+\frac{1}{2}-5-\frac{5}{3}+\frac{3}{2}-3+\frac{7}{3}-\frac{5}{2}\)

\(=6-5-3+\left(\frac{1}{2}+\frac{3}{2}-\frac{5}{2}\right)-\left(\frac{2}{3}+\frac{5}{3}-\frac{7}{3}\right)\)

\(=-2-\frac{1}{2}=\frac{-4}{2}-\frac{1}{2}=\frac{-5}{2}\)

cách 1: A= 35/6-31/6-19/6= -15/6 = -5/2

cách 2: bỏ ngoặc

A= 6 -2/3 +1/2 - 5 - 5/3 +3/2 -3 +7/3 -5/2=

A= (6-5-3) +(1/2+3/2 -5/2) +(-2/3 -5/3 +7/3)=

A= -2+ (-1/2) + 0= -5/2

cách 2:

a=\(6-\frac{2}{3}+\frac{1}{2}-5-\frac{5}{3}+\frac{3}{2}-3+\frac{7}{3}-\frac{5}{2}\)

a=(6-5-3)-(2/3+5/3-7/3)+(1/2+3/2-5/2)

a=-2-1/2

a=-5/2

Cach 1 jdujsoidfojaiuh

***** nhá, mất công làm đấy

C1:   

\(A=\left(\frac{36}{6}-\frac{4}{6}+\frac{3}{6}\right)-\left(\frac{150}{30}+\frac{50}{30}+\frac{45}{30}\right)-\left(\frac{18}{6}-\frac{14}{6}+\frac{15}{6}\right)\)

\(=\frac{35}{6}-\frac{155}{30}-\frac{19}{6}=\frac{35}{6}-\frac{19}{6}-\frac{155}{30}\)

\(=\frac{16}{6}-\frac{155}{30}=\frac{80}{30}-\frac{155}{30}=\frac{75}{30}=\frac{-5}{2}=-2\frac{1}{2}\)

C2:

\(A=6-\frac{2}{3}+\frac{1}{2}-5-\frac{5}{3}+\frac{3}{2}-3+\frac{7}{3}-\frac{5}{2}\)

\(=\left(6-5-3\right)-\left(\frac{2}{3}+\frac{5}{3}-\frac{7}{3}\right)+\left(\frac{1}{2}+\frac{3}{2}-\frac{5}{2}\right)\)

\(=-2-0+\frac{-1}{2}\)

\(=-2+\frac{-1}{2}=-2\frac{1}{2}\)

Thực hiện phép tính sau:

\(B=\frac{5}{9}.2,\left(37\right)+0,\left(5\right).3,\left(62\right)-2\sqrt{\left(\frac{-2}{3}\right)^2}\)

Tại sao lại là 5 - 3 chứ ko phải 5 + 3 vậy pn