đúng rồi bạn k mk nha

phếp tính trreen là đúng

\(\left(5-\frac{23}{7}\right)×\frac{63}{24}+\frac{11}{9}:\frac{2}{3}\)

\(=\frac{12}{7}×\frac{63}{24}+\frac{11}{9}:\frac{2}{3}\)

\(=\frac{9}{2}+\frac{11}{9}:\frac{2}{3}\)

\(=\frac{9}{2}+\frac{11}{6}\)

\(=\frac{19}{3}\)

Bằng 19/3 nha

    chúc bn hok tốt

\(\left(5-\frac{23}{7}\right)\times\frac{63}{24}+\frac{11}{9}:\frac{2}{3}\)

\(=\frac{12}{7}\times\frac{63}{24}+\frac{11}{6}\)

\(=\frac{9}{2}+\frac{11}{6}\)

\(=\frac{19}{3}\)

Học tốt

13/120+11/24-17/30

13/120+55/120-68/120

68/120-68/120

0

18/100+9/45-2/25

cvfbhm,

Xin lỗi em ko biết làm , em vẫn chưa lên lớp 9

1)\(\left(\frac{1}{a-\sqrt{a}}+\frac{1}{\sqrt{a}-1}\right):\frac{\sqrt{a}+1}{a-2\sqrt{a}+1}\)

\(=\left(\frac{1}{\sqrt{a}\left(\sqrt{a}-1\right)}+\frac{\sqrt{a}}{\sqrt{a}\left(\sqrt{a}-1\right)}\right)\cdot\frac{\left(\sqrt{a}-1\right)^2}{\sqrt{a}+1}\)

\(=\frac{\sqrt{a}+1}{\sqrt{a}\left(\sqrt{a}-1\right)}\cdot\frac{\left(\sqrt{a}-1\right)^2}{\sqrt{a}+1}\)

\(=\frac{\sqrt{a}-1}{\sqrt{a}}\)

7641840

=28104

hk tốt

523 x 24 + 718 x 24 - 70 x 24

= 24 ( 523 + 718 - 70 )

= 24 x 1171

= 28104

a, 6/5

b,1

hỏi google phay

Hỏi gg đi khó lắm

Xin lỗi  vì ko giúp cho bạn vì khó lắm

a) \(\frac{3}{4}+\frac{1}{4}:x=-3\)

\(\frac{1}{4}:x=-3-\frac{3}{4}\)

\(\frac{1}{4}:x=\frac{-15}{4}\)

\(x=\frac{1}{4}:\frac{-15}{4}\)

\(x=\frac{-1}{15}\)

b) \(x-\frac{1}{2}=2,5-x\)

\(x+x=2,5+\frac{1}{2}\)

\(2x=3\)

\(x=\frac{3}{2}\)

c) \(\left(x+\frac{1}{10}\right)+\left(x+\frac{1}{11}\right)=0\)

\(2x+\frac{21}{110}=0\)

\(2x=\frac{-21}{110}\)

\(x=\frac{-21}{110}:2\)

\(x=\frac{-21}{220}\)