Tìm X 

A, (x \(-\) 3256 ) + 2589 = 12587 \(-\) 2658

B, 125879 \(-\) ( x \(-\) 2597 ) \(-\) 5879 = 52369

Tìm X

A,(x + 5687) : 7 = 3542 + 18754

B,758293 \(-\) x = 125547 +325487

\(\dfrac{2}{3}x\dfrac{20}{21}x\dfrac{3}{2}x\dfrac{7}{5}=\)

\(\dfrac{5}{17}x\dfrac{21}{32}x\dfrac{47}{24}x\) 0 =

\(\dfrac{11}{3}x\dfrac{26}{7}-\dfrac{26}{7}x\dfrac{8}{3}\)

Tính giá trị của biểu thức 

\(\dfrac{2}{5}x\dfrac{25}{29}+\dfrac{3}{5}x\dfrac{25}{29}\)

\(\dfrac{5}{2}x\dfrac{3}{7}-\dfrac{3}{14}:\dfrac{6}{7}\)

\(\dfrac{15}{4}:\dfrac{5}{12}-\dfrac{6}{5}:\dfrac{11}{15}\)

Tính 

\(\dfrac{18}{35}-\dfrac{3}{5}+\dfrac{3}{7}=\)

\(\dfrac{11}{12}-\dfrac{1}{3}-\dfrac{1}{4}=\)

\(\dfrac{9}{20}-\dfrac{1}{4}-\dfrac{1}{5}=\)

Tính Bằng cách thuận tiện nhất 

A \(\dfrac{4}{7}+\dfrac{11}{9}+\dfrac{10}{7}+\dfrac{7}{9}=\)

B \(\dfrac{1}{6}+\dfrac{7}{12}+\dfrac{5}{6}+\dfrac{5}{12}=\)

C \(\dfrac{1}{26}+\dfrac{7}{30}+\dfrac{12}{26}+\dfrac{8}{30}=\)

D \(\dfrac{6}{25}+\dfrac{7}{48}+\dfrac{9}{25}+\dfrac{17}{47}=\)