a
=> \(x=\dfrac{2}{7}:\dfrac{2}{3}=\dfrac{2.3}{2.7}=\dfrac{3}{7}\)
b
=> \(x=\dfrac{2}{5}:\dfrac{3}{5}=\dfrac{2.5}{3.5}=\dfrac{2}{3}\)
c
=> \(x=\dfrac{13}{7}.\dfrac{8}{13}=\dfrac{13.8}{7.13}=\dfrac{8}{7}\)
d
=> \(x=\dfrac{3}{2}:\dfrac{7}{4}=\dfrac{3.2.2}{2.7}=\dfrac{6}{7}\)
a: 2/3*x=2/7
=>x=2/7:2/3=3/7
b: x*3/5=2/5
=>x=2/5:3/5=2/5*5/3=10/15=2/3
c: x:8/13=13/7
=>x=13/7*8/13=8/7
d: 3/2:x=7/4
=>x=3/2:7/4=3/2*4/7=12/14=6/7
a) \(\dfrac{2}{3}\cdot x=\dfrac{2}{7}\)
\(\Rightarrow x=\dfrac{2}{7}:\dfrac{2}{3}\)
\(\Rightarrow x=\dfrac{2}{7}\cdot\dfrac{3}{2}\)
\(\Rightarrow x=\dfrac{3}{7}\)
b) \(x\cdot\dfrac{3}{5}=\dfrac{2}{5}\)
\(\Rightarrow x=\dfrac{2}{5}:\dfrac{3}{5}\)
\(\Rightarrow x=\dfrac{2}{5}\cdot\dfrac{5}{3}\)
\(\Rightarrow x=\dfrac{2}{3}\)
c) \(x:\dfrac{8}{13}=\dfrac{13}{7}\)
\(\Rightarrow x=\dfrac{8}{13}\cdot\dfrac{13}{7}\)
\(\Rightarrow x=\dfrac{8}{7}\)
d) \(\dfrac{3}{2}:x=\dfrac{7}{4}\)
\(\Rightarrow x=\dfrac{3}{2}:\dfrac{7}{4}\)
\(\Rightarrow x=\dfrac{3}{2}\cdot\dfrac{4}{7}\)
\(\Rightarrow x=\dfrac{6}{7}\)