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VH
3
TN
1
18 tháng 2 2023
\(\dfrac{24}{32}=\dfrac{24:8}{32:8}=\dfrac{3}{4}\)
\(\dfrac{45}{6}=\dfrac{45:3}{6:3}=\dfrac{15}{2}\)
\(\dfrac{75}{100}=\dfrac{75:25}{100:25}=\dfrac{3}{4}\)
\(\dfrac{27}{63}=\dfrac{27:9}{63:9}=\dfrac{3}{7}\)
18 tháng 2 2023
\(\dfrac{24}{32}=\dfrac{24:8}{32:8}=\dfrac{3}{4}\)
\(\dfrac{75}{100}=\dfrac{75:25}{100:25}=\dfrac{3}{4}\)
\(\dfrac{45}{60}=\dfrac{45:15}{60:15}=\dfrac{3}{4}\)
\(\dfrac{27}{63}=\dfrac{27:9}{63:9}=\dfrac{3}{7}\)
H
4 tháng 2 2023
\(a,\dfrac{52}{32}=\dfrac{13}{8}\\ \dfrac{55}{65}=\dfrac{11}{13}\\ MSC:104\\ =>\dfrac{13}{8}=\dfrac{13.13}{8.13}=\dfrac{169}{104}\\ \dfrac{11}{13}=\dfrac{11.8}{13.8}=\dfrac{88}{104}\)
\(b,\dfrac{72}{64}=\dfrac{9}{8}\\ \dfrac{54}{81}=\dfrac{2}{3}\\ MSC:24\\ \dfrac{9}{8}=\dfrac{9.3}{8.3}=\dfrac{27}{24}\\ \dfrac{2}{3}=\dfrac{2.8}{3.8}=\dfrac{16}{24}\\ c,\dfrac{24}{36}=\dfrac{2}{3}\\ \dfrac{12}{30}=\dfrac{2}{5}\\ MSC:15\\ \dfrac{2}{3}=\dfrac{2.5}{3.5}=\dfrac{10}{15}\\ \dfrac{2}{5}=\dfrac{2.3}{3.5}=\dfrac{6}{15}\)
\(d,\dfrac{80}{40}=2\\ \dfrac{45}{63}=\dfrac{5}{7}\\ MSC:7\\ 2=\dfrac{14}{7}\\ e,\dfrac{150}{50}=3\\ \dfrac{100}{200}=\dfrac{1}{2}\\ MSC:2\\ 3=\dfrac{6}{2}\\ f,\dfrac{54}{81}=\dfrac{2}{3}\\ \dfrac{69}{93}=\dfrac{23}{21}\\ MSC:21\\ \dfrac{2}{3}=\dfrac{2.7}{3.7}=\dfrac{14}{21}\)
4 tháng 2 2023
\(a.\dfrac{52}{32}\text{=}\dfrac{13}{8};\dfrac{55}{65}\text{=}\dfrac{11}{13}\)
\(\dfrac{13.13}{13.8}\text{=}\dfrac{169}{104};\dfrac{11.8}{13.8}\text{=}\dfrac{88}{104}\)
\(c.\dfrac{24}{36}\text{=}\dfrac{2}{3};\dfrac{12}{30}\text{=}\dfrac{2}{5}\)
\(\dfrac{2.5}{3.5}\text{=}\dfrac{10}{15};\dfrac{2.3}{5.3}\text{=}\dfrac{6}{15}\)
\(b.\dfrac{72}{64}\text{=}\dfrac{9.3}{8.3}\text{=}\dfrac{27}{24};\dfrac{54}{81}\text{=}\dfrac{2.8}{3.8}\text{=}\dfrac{16}{24}\)
\(d.\dfrac{80}{40}\text{=}\dfrac{2.63}{63}\text{=}\dfrac{126}{63};\dfrac{45}{63}\)
\(e.\dfrac{150}{50}\text{=}\dfrac{3.2}{2}\text{=}\dfrac{6}{2};\dfrac{100}{200}\text{=}\dfrac{1}{2}\)
\(f.\dfrac{54}{81}\text{=}\dfrac{2.31}{3.31}\text{=}\dfrac{62}{93};\dfrac{69}{93}\)
NN
4
28 tháng 5 2022
\(\dfrac{18}{45}=\dfrac{2}{5}\dfrac{63}{81}=\dfrac{7}{9}\) minh chi co the lam the nay thoi vi minh dang co viec gap
PN
2
CT
2 tháng 3 2022
\(\frac{70}{45}=\frac{70\div5}{45\div5}=\frac{14}{9}\)
\(\frac{18}{54}=\frac{18\div18}{54\div18}=\frac{1}{3}\)
Chú ý : Dấu này \(\div\) là dấu chia nha
18/63=2/7
54/12=9/2
27/45=3/5
135/351=15/38
tk cho mình
\(\frac{18}{63}=\frac{18:9}{63:9}=\frac{2}{7}\)
\(\frac{54}{12}=\frac{54:6}{12:6}=\frac{9}{2}\)
\(\frac{27}{45}=\frac{27:9}{45:9}=\frac{3}{5}\)
\(\frac{135}{315}=\frac{135:45}{315:45}=\frac{3}{7}\)