Question

X+3/5=1     x;4/7=5/6      

Answer 1

`x+3/5=1`

`x=1-3/5`

`x=2/5`

.

`x : 4/7 = 5/6`

`x=5/6 xx 4/7`

`x=10/21`

Answer 2

\(x+\dfrac{3}{5}=1\)

\(\Leftrightarrow x=1-\dfrac{3}{5}\)

\(\Leftrightarrow x=\dfrac{2}{5}\)

\(x:\dfrac{4}{7}=\dfrac{5}{6}\)

\(\Leftrightarrow x=\dfrac{4}{7}\times\dfrac{5}{6}\)

\(\Leftrightarrow x=\dfrac{10}{21}\)

Answer 3

đề bài như này hả bạn:

a,\(x+\dfrac{3}{5}=1< =>x=1-\dfrac{3}{5}=\dfrac{2}{5}\)

b,\(x.\dfrac{4}{7}=\dfrac{5}{6}< =>x=\dfrac{5}{6}:\dfrac{4}{7}=\dfrac{35}{24}\)

Answer 4

x+\(\dfrac{3}{5}\)=1                                                 x:\(\dfrac{4}{7}=\dfrac{5}{6}\)

       =1-\(\dfrac{3}{5}\)                                                    =\(\dfrac{5}{6}\times\dfrac{4}{7}\)

       =\(\dfrac{2}{5}\)                                                       =\(\dfrac{10}{21}\)