= (17/6 - 1/6) : 4

= 16/6 :4 

=2/3

k mk nha bn

a/b nhân 4 = 8/3

a/b = 8/3 : 4= 2/3

17/6-1/6=8/3

4 đc viết dưới dạng 4/1

8/3:4/1=2/3

kết quả cần tìm:a/b=2/3

k mk nhé!

\(\frac{a}{b}\cdot4+\frac{1}{16}=\frac{17}{6}\)

\(\frac{a}{b}\cdot4=\frac{17}{6}-\frac{1}{16}\)

\(\frac{a}{b}\cdot4=\frac{133}{48}\)

\(\frac{a}{b}=\frac{133}{48}:4\)

\(\frac{a}{b}=\frac{133}{12}\)

Cách giải của mình nhé

17/5 nha

a/b x 4 +1/6 = 17/6

=>a/b x 4 = 17/6 - 1/6 = 16/6  = 8/3

=> a/b = 8/3 : 4 = 2/3

=> a/b = 2/3

a/b*4+1/6=17/6

a/b*4       =17/6-1/6

a/b*4       =16/6

a/b           =16/6 : 4

a/b           =16/24

a/b           =2/3

\(\frac{a}{b}\)x 4 + \(\frac{1}{6}\)= \(\frac{17}{6}\)

\(\frac{a}{b}\)x 4 = \(\frac{17}{6}\)- \(\frac{1}{6}\)= \(\frac{16}{6}\)

\(\frac{a}{b}\)= \(\frac{16}{6}\): 4

\(\frac{a}{b}\)= \(\frac{2}{3}\)

\(\frac{a}{b}\)x 4 + \(\frac{1}{6}\)= \(\frac{17}{6}\)

\(\frac{a}{b}\)x 4             = \(\frac{17}{6}\)- \(\frac{1}{6}\)

\(\frac{a}{b}\)x 4             = \(\frac{16}{6}\)

\(\frac{a}{b}\)                 = \(\frac{16}{6}\): 4

\(\frac{a}{b}\)                 = \(\frac{64}{6}\)

a: =35/17-18/17-9/5+4/5

=1-1=0

b: =-7/19(3/17+8/11-1)

=7/19*18/187=126/3553

c: =26/15-11/15-17/3-6/13

=1-6/13-17/3

=7/13-17/3=-200/39

Giúpppp mìnhh vớiiiiiiiiiiiiiiiiiiiiiiiii nhanhhhhhhhhhhh lênnnnnnnnnnnnnnnnn

Nhanh rồi mình tích cho

a: \(\dfrac{6}{7}\cdot\dfrac{16}{15}\cdot\dfrac{7}{6}\cdot\dfrac{21}{32}=\dfrac{16}{32}\cdot\dfrac{21}{15}=\dfrac{1}{2}\cdot\dfrac{7}{5}=\dfrac{7}{10}\)

b: \(\dfrac{21}{17}\cdot\dfrac{13}{14}\cdot56\cdot\dfrac{3}{42}=\dfrac{21}{14}\cdot\dfrac{13}{17}\cdot\dfrac{1}{14}\cdot56=\dfrac{78}{17}\)

c: \(=\dfrac{11}{21}\left(\dfrac{7}{4}+\dfrac{5}{4}\right)=\dfrac{11}{21}\cdot3=\dfrac{11}{7}\)

a) \(\frac{75^3.3^7}{81^4.5^6}=\frac{5^3.3^3.5^3.3^7}{\left(3^4\right)^4.5^6}=\frac{5^6.3^3.3^7}{3^{16}.5^6}=\frac{3^{10}}{3^{16}}=\frac{1}{3^6}=\frac{1}{729}\)
b) \(\frac{6^6.4^2}{3^{12}.2^8}=\frac{2^6.3^6.\left(2^2\right)^2}{3^{12}.2^8}=\frac{2^6.3^6.2^4}{3^{12}.2^8}=\frac{2^{10}.3^6}{3^{12}.2^8}=\frac{2^2.1}{3^6}=\frac{4}{729}\)
c) \(\frac{34^5.2^5}{2^{14}.17^5}=\frac{2^5.17^5.2^5}{2^{14}.17^5}=\frac{2^{10}}{2^{14}}=\frac{1}{2^4}=\frac{1}{16}\)

 1/2 x 2 mũ n cộng 4 x 2 mũ n = 9 x 2 mũ n

Ta có : \(a-11b+3c⋮17\)

\(\Leftrightarrow19.\left(a-11b+3c\right)⋮17\)

\(\Leftrightarrow19a-209b+57c⋮17\)

\(\Leftrightarrow\left(17a-204b+51c\right)+\left(2a-5b+6c\right)⋮17\)

\(\Rightarrow\left(2a-5b+6c\right)⋮17\)(vì 17a - 204b + 51c đã chia hết cho 17 ) 

\(\RightarrowĐCPM\)