a: =11/4+5/4-9/8

=4-9/8=32/8-9/8=23/8

b: \(=\dfrac{6}{7}\cdot\dfrac{7}{4}+\dfrac{5}{3}=\dfrac{3}{2}+\dfrac{5}{3}=\dfrac{9+10}{6}=\dfrac{19}{6}\)

c: \(=\dfrac{13}{18}\cdot\dfrac{9}{5}-1=\dfrac{13}{10}-1=\dfrac{3}{10}\)

d: \(=3+\dfrac{9}{4}\cdot\dfrac{5}{3}=3+\dfrac{45}{12}=\dfrac{81}{12}=\dfrac{27}{4}\)

`a)11/4+5/4-9/8=4-9/8=32/8-9/8=23/8`

`b)6/7 xx 7/4+5/3=3/2+5/3=9/6+10/6=19/6`

`c)13/18xx9/5−1=13/10−1=3/10`

`d)3+9/4xx5/3=3+45/12=27/4`

=(1-2)-(3-4)+(5-6)-(7-8)+...+(2021-2022)-2023
=(-1)-(-1)+(-1)-...+(-1)-2023
=0-2023
=-2023

Có chép nhầm đề ko

ko bạn ơi

10 + 2 nhân x = 1024 : 64

10+2 nhân x = 16

     2 nhân x = 16 - 10

     2 nhân x = 6

                x = 6 : 2

                x = 3

 10+2nhân x=4 mũ 5:4 mũ 3

10+2nhân x=4 mũ 2

10+2nhân x=16

     2nhân x=16-10

     2nhân x=6

                x=6:2

                x=3

a,\(375:5^3-\left(3^8:3^6-2.2^3\right)=3-\left(3^2-2^4\right)=3-\left(9-16\right)=3-\left(-7\right)=3+7=10\)

a)\(\frac{11}{12}-\left(\frac{2}{5}+x\right)=\frac{2}{3}\)

    \(\frac{2}{5}+x=\frac{1}{4}\)

    \(x=\frac{1}{4}-\frac{2}{5}\)

    \(x=-\frac{3}{20}\)

Vậy \(x=-\frac{3}{20}\)

b)\(\frac{3}{4}+\frac{1}{4}:x=\frac{2}{3}\)

    \(\frac{1}{4}:x=-\frac{1}{12}\)

    \(x=\frac{1}{4}:\left(-\frac{1}{12}\right)\)

    \(x=-3\)

Vậy \(x=-3\)

a) 27 : x -\(\frac{1}{2}=\frac{15}{7}:5\)

27 : x -\(\frac{1}{2}\)= \(\frac{3}{7}\)

27 : x = \(\frac{3}{7}+\frac{1}{2}\)

27 : x =\(\frac{6}{14}+\frac{7}{14}\)

27 : x = \(\frac{13}{14}\) 

x = 27 : \(\frac{13}{14}\)

x = 27 . \(\frac{14}{13}\)

x = \(\frac{378}{13}\)

b) 2 . x - \(\frac{3}{4}\)= \(\frac{15}{9}.\frac{3}{5}\)

2 . x - \(\frac{3}{4}\)= 1

2 . x  = 1 + \(\frac{3}{4}\)

2 . x = \(\frac{7}{4}\)

x = \(\frac{7}{4}:2\)

x = \(\frac{7}{8}\)

cho mình đúng nha

Bạn giỏi lắm Thảo Anh

\(2x+x=-3+15+5+30\)

\(3x=47\)

\(x=\frac{47}{3}\)

hình như bạn sai r hay sao ý

Aww... Sr nha

Làm lại:

\(-2x+x=-3+15+5+30\)

\(-x=47\)

\(\Rightarrow x=-47\)