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\(\dfrac{1}{3}=\dfrac{2}{6}=\dfrac{3}{9}=\dfrac{4}{12}\)
\(\dfrac{2}{5}=\dfrac{4}{10}=\dfrac{8}{20}=\dfrac{16}{40}\)
\(7,14=\dfrac{714}{100}=\dfrac{357}{50}=\dfrac{3570}{500}\)
\(\dfrac{25}{3}=\dfrac{100}{12}=\dfrac{150}{18}=\dfrac{200}{24}\)
\(\dfrac{25}{15}=\dfrac{5}{3}=\dfrac{10}{6}=\dfrac{15}{9}\)
\(\frac{7}{45}=\frac{7}{45} ; \frac{4}{15}=\frac{12}{45} ; \frac{2}{3}=\frac{30}{45}\)
\(40:\frac{3}{10}\)
\(=40:0,3\)
\(=133,3333333=\frac{400}{3}\)
`1/3 = 44 : x/66`
`=> 44 : x/66 =1/3`
`=> x/66 = 44 : 1/3`
`=> x/66 = 44 xx 3`
`=>x/66= 132`
`=> x= 132 xx 66`
`=>x=8712`
8712 nha
44 : x/66 = 1/3
x/66 = 44 : 1/3
x/66 = 132
x =132×66
x =8712
\(x+\dfrac{3}{4}=\dfrac{28}{6}+\dfrac{1}{2}\\ x+\dfrac{3}{4}=\dfrac{31}{6}\\ x=\dfrac{31}{6}-\dfrac{3}{4}\\ x=\dfrac{53}{12}\)
\(x+\dfrac{3}{4}=\dfrac{28+3}{6}=\dfrac{31}{6}\Leftrightarrow x=\dfrac{31}{6}-\dfrac{3}{4}=\dfrac{62-9}{12}=\dfrac{53}{12}\)
= 157,5 nhé bạn
= 70 nha bn<3