Question

Tìm x : 7/3 - 2/5 :1/x = 3/4

các bjn giải chi tiết ra giúp mình nhé

Answer 1

tick di minh lam cho

Answer 2

\(\dfrac{7}{3}-\dfrac{2}{5}:\dfrac{1}{x}=\dfrac{3}{4}\)

\(\dfrac{2}{5}:\dfrac{1}{x}=\dfrac{7}{3}-\dfrac{3}{4}\)

\(\dfrac{2}{5}:\dfrac{1}{x}=\dfrac{19}{12}\)

\(\dfrac{1}{x}=\dfrac{2}{5}:\dfrac{19}{12}\)

\(\dfrac{1}{x}=\dfrac{24}{95}\)

\(\Rightarrow x=\varnothing\)

Answer 3

tick di

Answer 4

\(\dfrac{7}{3}-\dfrac{2}{5}:\dfrac{1}{x}=\dfrac{3}{4}\\ \dfrac{2}{5}:\dfrac{1}{x}=\dfrac{7}{3}-\dfrac{3}{4}\\ \dfrac{2}{5}:\dfrac{1}{x}=\dfrac{28}{12}-\dfrac{9}{12}\\ \dfrac{2}{5}:\dfrac{1}{x}=\dfrac{19}{12}\\ \dfrac{1}{x}=\dfrac{2}{5}:\dfrac{19}{12}\\ \dfrac{1}{x}=\dfrac{2}{5}.\dfrac{12}{19}\\ \dfrac{1}{x}=\dfrac{24}{95}\\ \Rightarrow x.24=1.95\\ x.24=95\\ x=95:24\\ x=\dfrac{95}{24}\)

Answer 5

7/3-2/5:1/x=3/4

2/5:1/x=7/3-3/4

2/5:1/x=28/12-9/12

2/5:1/x=19/12

1/x=2/5:19/12

1/x=2/5.12/19

1/x=24/95

1:x=24/95

x=1:24/95x=95/24

Answer 6

minh lam roi nha hinh nhu dung do

Answer 7

cam on ban nhieu nha