\(\dfrac{26}{7}\) x \(\dfrac{11}{3}-\dfrac{26}{7}\) x \(\dfrac{2}{3}-\dfrac{6}{3}\) x \(\dfrac{26}{7}\)

\(=\dfrac{26}{7}\) x \(\left(\dfrac{11}{3}-\dfrac{2}{3}-\dfrac{6}{3}\right)\)

\(=\dfrac{26}{7}\) x \(\dfrac{3}{3}\)

\(=\dfrac{26}{7}\) x \(1=\dfrac{26}{7}\)

26/7 x 11/3 - 26/7 x 2/3 - 6/3 x 26/7

=( 11/3 - 2/3 - 6/3 ) x26/7

=      1 x 26/7

=         26 /7

Tick cho mình nha

267267 x 113−267113−267 x 23−6323−63 x 267267

=267=267 x (113−23−63)(113−23−63)

=267=267 x 3333

=267=267 x 1=267

y x ( 26 + 327 ) = 327 x 7 + 26 x 7

y x 353 = ( 327 + 26 ) x 7

y x 353 = 353 x 7

y x 353 = 2472

y = 2471 : 353

y = 7

xem lại đề vì số sao nó cao và là số âm nữa

Mình xem lại rồi 5/7 nha

7^30:(7^26.43+7^26.6)

=7^30:[7^26.(43+6)]

=7^30:(7^26.49)

=7^30:(7^26.7^2)

=7^30:7^28

=7^2=49

= 26/7 x 11/3 - 26/7 x 8/3

= 26/7 x (11/3 - 8/3)

= 26/7 x 1

= 26/7

( 11/3 - 8/3) x 26/7 = 3/3 x 26/7 = 1 x 26/7= 26/7

\(=\dfrac{26}{17}\cdot\left(\dfrac{11}{3}-\dfrac{8}{3}\right)=\dfrac{26}{17}\cdot1=\dfrac{26}{17}\)

Đúng rồi nhé

giúp mình

giup minh

\(\dfrac{5}{2}\times\dfrac{3}{7}-\dfrac{3}{4}\div\dfrac{7}{3}=\dfrac{5}{2}\times\dfrac{3}{7}-\dfrac{3}{4}\times\dfrac{3}{7}=\dfrac{5}{2}\times\dfrac{3}{7}-\dfrac{3}{7}\times\dfrac{3}{4}\) 

                           \(=\dfrac{3}{7}\times\left(\dfrac{5}{2}-\dfrac{3}{4}\right)=\dfrac{3}{7}\times\dfrac{7}{4}=\dfrac{3}{4}\) 

\(\dfrac{5}{4}\div\dfrac{15}{12}-\dfrac{5}{4}\div\dfrac{1}{2}=\dfrac{5}{4}\times\dfrac{12}{15}-\dfrac{5}{4}\times2\)

                              \(=\dfrac{5}{4}\times\left(\dfrac{12}{15}-2\right)\) 

                              \(=\dfrac{5}{4}\times\dfrac{-6}{5}=\dfrac{-3}{2}\) 

\(\dfrac{1}{26}+\dfrac{7}{30}+\dfrac{12}{26}+\dfrac{8}{3}=\left(\dfrac{1}{26}+\dfrac{12}{26}\right)+\left(\dfrac{7}{30}+\dfrac{8}{3}\right)\)

                                 \(=\dfrac{1}{2}+\dfrac{29}{10}=\dfrac{17}{5}\)

y x ( 26 + 327 ) = 327 x 7 + 26 x 7 

y x 353  = 2471

  y = 2471 : 353 

  y = 7

y x (25 + 327) = 327 x 7 + 26 x 7

         y x 352 = (327 + 26) x 7

        y x 352 = 353 x 7

         y x 352 = 2471

                  y = 2471 : 352

                 y = 2471/352

đúng thì ủng hộ vs

sorry tính lộn

y x (26 + 327) = 327 x 7 + 26 x 7

         y x 353 = 2471

                 y = 2471 : 353 

                 y  = 7

bài kia lộn nha

Chọn đáp án B.