\(\dfrac{4}{5}:x=\dfrac{2.5-1.7}{35}\\ =>\dfrac{4}{5}:x=\dfrac{3}{35}\\ =>x=\dfrac{4}{5}:\dfrac{3}{35}\\ =>x=\dfrac{4}{5}\times\dfrac{35}{3}\\ =>x=\dfrac{28}{3}\)
`4/5 : x = 2/7 - 1/5`
`4/5 : x = 10/35 - 7/35 = 3/35`
`x = 4/5 : 3/35 = 4/5 *35/3 = 28/3`
Vậy `x=28/3`
\(\dfrac{4}{5}:x=\dfrac{2}{7}-\dfrac{1}{5}\)
\(\dfrac{4}{5}:x=\dfrac{3}{35}\)
\(x=\dfrac{3}{35}\times\dfrac{4}{5}\)
\(x=\dfrac{12}{175}\)
\(\dfrac{4}{5}\):x=\(\dfrac{2}{7}\)-\(\dfrac{1}{5}\)
\(\dfrac{4}{5}\):x=\(\dfrac{3}{35}\)
x = \(\dfrac{4}{5}\):\(\dfrac{3}{35}\)
x = \(\dfrac{28}{3}\)
\(\dfrac{4}{5}:x=\dfrac{2}{7}-\dfrac{1}{5}\\ \dfrac{4}{5}:x=\dfrac{10}{35}-\dfrac{7}{35}=\dfrac{3}{35}\\ \Rightarrow\dfrac{4}{5}:x=\dfrac{3}{35}\\ \Rightarrow x=\dfrac{3}{35}:\dfrac{4}{5}=\dfrac{3}{35}.\dfrac{5}{4}=\dfrac{15}{140}=\dfrac{3}{28}\)
45:x=27−1545:x=27-15
45:x=1035−735=33545:x=1035-735=335
x=45:335=45⋅353=283x=45:335=45⋅353=283
Vậy x=283
