Question

[Lê thành đạt]

Câu 7: Tìm X

a, 6/7: x = 5/3

b, x -3/5 = 2/3

Answer 1

[『Kuroba ム Tsuki Ryoo ︵²ᵏ⁷』]

`#3107.101107`

`7,`

`a,`

\(\dfrac{6}{7}\div x=\dfrac{5}{3}\\ \Rightarrow x=\dfrac{6}{7}\div\dfrac{5}{3}\\ \Rightarrow x=\dfrac{18}{35}\)

Vậy, \(x=\dfrac{18}{35}.\)

`b,`

\(x-\dfrac{3}{5}=\dfrac{2}{3}\\ \Rightarrow x=\dfrac{2}{3}+\dfrac{3}{5}\\ \Rightarrow x=\dfrac{19}{15}\)

Vậy, \(x=\dfrac{19}{15}.\)

Answer 2

[456]

a)6/7 : x = 5/3

        x = 6/7 : 5/3 (6/7 x 3/5)

        x = 18/35

b)x - 3/5 = 2/3

x         = 2/3 + 3/5

x         = 10/15 + 9/15

x         = 19/15