x = 734 - 216                            x = 377 - 282

x = 518                                     x = 95

D

C

\(x\div\dfrac{7}{11}=\dfrac{4}{7}+\dfrac{1}{7}\)

\(x\div\dfrac{7}{11}=\dfrac{5}{7}\)

\(x=\dfrac{5}{7}\times\dfrac{7}{11}\)

\(x=\dfrac{5}{11}\)

D

Ăn cháo đá bát

one billion

A

a)\(\dfrac{8\times3\times4}{4\times4\times3}=\dfrac{2}{1}\)

b)\(\dfrac{15\times2\times5\times5\times7\times8}{15\times5\times8\times12\times7\times2}=\dfrac{5}{12}\)

4 lần