Question

tìm x

2/5+3/5:x=3/20

Answer 1

3/5:x=3/20-2/5

3/5:x=-1/4

x=3/5:-1/4

x=-12/5

Answer 2

`2 / 5 + 3 / 5 : x = 3 / 20`

`3 / 5 : x = 3 / 20 - 2 / 5`

`3 / 5 : x = [-1] / 4`

`x = 3 / 5 : [-1] / 4`

`x = [-12] / 5`

Answer 3

\(\dfrac{2}{5}+\dfrac{3}{5}:x=\dfrac{3}{20}\\ \dfrac{3}{5}:x=\dfrac{3}{20}-\dfrac{2}{5}\\ \dfrac{3}{5}:x=\dfrac{-1}{4}\\ x=\dfrac{3}{5}:\left(\dfrac{-1}{4}\right)\\ x=\dfrac{3}{5}.\left(\dfrac{-4}{1}\right)\\ x=\dfrac{-12}{5}\)

Answer 4

3/5:x=3/20-2/5

3/5:x=-1/4

x=3/5:-1/4

x=-12/5