Em nên gõ công thức trực quan để đề bài rõ ràng nhé

51/30

24/65

chưa xong 

Các bạn giúp mình với mình đang cần gấp lắm

\(\frac{7}{3}.9-\frac{9}{4}.5+\frac{11}{5}.6-\frac{13}{6}.7+\frac{15}{7}.8-\frac{17}{8}.9+\frac{19}{9}.10\)

\(=21-\frac{45}{4}+\frac{66}{5}-\frac{91}{6}+\frac{120}{7}-\frac{153}{8}+\frac{190}{9}\)

\(=26,91230159\)

Lớp mấy đó

\(\frac{4}{5}\). X -X-\(\frac{3}{2}\). X+\(\frac{4}{3}\)

X.(\(\frac{4}{5}\)-1+\(\frac{4}{3}\))-3/2

X.17/15-3/2=-7/10

X.17/15     =4/5

X               =12/17

k nhé

\(\dfrac{1}{5}:\dfrac{1}{10}-\dfrac{1}{3}.\dfrac{6}{5}-\dfrac{9}{4}\)

=\(\dfrac{1}{5}.10-\dfrac{2}{5}-\dfrac{9}{4}\)

=2-\(\dfrac{53}{20}\)

=-\(\dfrac{13}{20}\)

Gõ latex cho dễ nhìn bn nhé

\(\dfrac{1}{5}:\dfrac{1}{10}-\dfrac{1}{3}.\dfrac{6}{5}-\dfrac{9}{4}=\dfrac{1}{5}.10-\dfrac{2}{5}-\dfrac{9}{4}=2-\dfrac{2}{5}-\dfrac{9}{4}=\dfrac{40}{20}-\dfrac{8}{20}-\dfrac{45}{20}=\dfrac{-13}{20}\)

Ai giúp mk đi, rồi mk k cho

chịch k hả vào khách sạn chịch nha

dễ, nhưng phai giai dc câu nay  60% nhan x cong 2 phan 3 = 1 phan 3 nhan 6va 1 phan 3

dễ mà

a) \(5^2.3^5.\left(\frac{3}{5}\right)^2\)
\(=25.243.\frac{9}{25}\)
\(=6075.\frac{9}{25}\)
\(=2187\)
b) \(4.32.2^3.\frac{1}{16}\)
\(=4.32.8.\frac{1}{16}\)
\(=128.8.\frac{1}{16}\)
\(=1024.\frac{1}{16}\)
\(=64\)
c) \(\left(-2\frac{1}{3}\right)^2.\left(-\frac{1}{4}\right)^2\)
\(=\frac{49}{9}.\frac{1}{16}\)
\(=\frac{49}{144}\)
d) \(\frac{9^5.5^7}{45^7}\)
\(=\frac{9^5}{9^7}\)
\(=\frac{1}{9^2}=\frac{1}{81}\)
e) 10³ + 5.10² + 5³
= 1000 + 5.100 + 125
= 1005 . 12500
= 13505
P/s: Mũ not ngũ ^^

a) \(\frac{2}{3}x\times\frac{1}{2}=\frac{1}{10}\Rightarrow\frac{2}{3}x=\frac{1}{5}\Rightarrow x=\frac{3}{10}\)

vvvvvv

2+ x chia 5 = 6