1.A

2.B

3.D

4.B

5.C

6.C

7.D

8.A

9.A

10.A

\(\dfrac{1}{2}=\dfrac{1.3}{2.3}=\dfrac{3}{6}>\dfrac{1}{6}\)

=>\(\dfrac{1}{2}>\dfrac{1}{6}\)

=\(\dfrac{1971}{100}:\dfrac{58}{10}=\dfrac{1971}{100}.\dfrac{10}{58}=\dfrac{1971}{580}\)

Lê sơLê trung hưng

There are flowers on the cabinets.

a)\(\dfrac{3}{4}=\dfrac{3.18}{4.18}=\dfrac{54}{72}\)

\(\dfrac{1}{-9}=\dfrac{-1}{9}=\dfrac{-1.8}{9.8}=\dfrac{-8}{72}\)

\(\dfrac{-5}{8}=\dfrac{-5.9}{8.9}=\dfrac{-45}{72}\)

b)\(\dfrac{1}{-7}=\dfrac{-1}{7}=\dfrac{-1.8}{7.8}=\dfrac{-8}{56}\)

\(\dfrac{-1}{-8}=\dfrac{1}{8}=\dfrac{1.7}{8.7}=\dfrac{7}{56}\)

\(\dfrac{3}{4}=\dfrac{3.14}{4.14}=\dfrac{42}{56}\)

c)\(\dfrac{1}{3}=\dfrac{1.10}{3.10}=\dfrac{10}{30}\)

\(\dfrac{-1}{5}=\dfrac{-1.6}{5.6}=\dfrac{-6}{30}\)

\(\dfrac{1}{-10}=\dfrac{-1}{10}=\dfrac{-1.3}{10.3}=\dfrac{-3}{30}\)

She gets up at six o'clock in the morning.

c)\(x+\dfrac{7}{8}=\dfrac{13}{12}\)

=>\(x=\dfrac{13}{12}-\dfrac{7}{8}=\dfrac{26}{24}-\dfrac{21}{24}=\dfrac{5}{24}\)

d)\(x-\dfrac{-6}{15}=\dfrac{4}{27}\)

=>\(x=\dfrac{4}{24}+\dfrac{-6}{15}=\dfrac{20}{120}-\dfrac{48}{120}=\dfrac{-28}{120}=\dfrac{-7}{30}\)

a)\(x-\dfrac{1}{5}=\dfrac{2}{11}\)

=>\(x=\dfrac{2}{11}+\dfrac{1}{5}=\dfrac{10+11}{55}=\dfrac{21}{55}\)

b)\(x=\dfrac{-1}{2}+\dfrac{3}{4}=\dfrac{-2+3}{4}=\dfrac{1}{4}\)