\(\dfrac{121\times75\times130\times169}{39\times60\times11\times198}\)

\(=\dfrac{25\times169}{6\times18}\)

\(=\dfrac{4225}{108}\)

\(2^2\cdot3^4=4\cdot81=324 \)

\(2^2\cdot3^2\cdot5=4\cdot9\cdot5=20\cdot5=100\)

\(121\cdot75\cdot130\cdot169=9075\cdot130\cdot169=1179750\cdot169=199377750\)

\(39\cdot60\cdot11\cdot198=2340\cdot11\cdot198=25740\cdot198=5096520\)

............Học tốt ^_^..............

a: \(\frac{-21}{28}=\frac{-21:7}{28:7}=\frac{-3}{4}\)

\(\frac{-39}{52}=\frac{-39:\text{13}}{52:13}=\frac{-3}{4}\)

\(\frac{-24}{63}=\frac{-24:3}{63:3}=\frac{-8}{21}\)

\(\frac{12}{-21}=\frac{12:3}{-21:3}=\frac{4}{-7}\)

b: \(\frac{-270}{450}=\frac{-270:90}{450:90}=\frac{-3}{5}\)

\(\frac{11}{-143}=\frac{-11}{143}=\frac{-11:\text{11}}{143:11}=\frac{-1}{13}\)

\(\frac{-132}{156}=\frac{-132:12}{156:12}=\frac{-11}{13}\)

\(\frac{-26}{169}=\frac{-26:13}{169:13}=\frac{-2}{13}\)

\(\dfrac{50}{60}=\dfrac{5}{6}\)
\(\dfrac{33}{11}=3\)
\(\dfrac{16}{60}=\dfrac{4}{15}\)
\(\dfrac{42}{22}=\dfrac{21}{11}\)

chia là gì z

\(\frac{24}{56}=\frac{24:8}{56:8}=\frac37\)

\(\frac{22}{121}=\frac{22:11}{121:11}=\frac{2}{11}\)

\(\frac{196}{28}=\frac{196:28}{28:28}=\frac71=7\)

\(\frac{26}{169}=\frac{26:13}{169:13}=\frac{2}{13}\)

\(\frac{221}{187}=\frac{221:17}{187:17}=\frac{13}{11}\)

\(\dfrac{24}{32}=\dfrac{24:8}{32:8}=\dfrac{3}{4}\)

\(\dfrac{45}{6}=\dfrac{45:3}{6:3}=\dfrac{15}{2}\)

\(\dfrac{75}{100}=\dfrac{75:25}{100:25}=\dfrac{3}{4}\)

\(\dfrac{27}{63}=\dfrac{27:9}{63:9}=\dfrac{3}{7}\)