a) \(\dfrac{7}{20}-x=\dfrac{1}{10}\)
\(x=\dfrac{7}{20}-\dfrac{1}{10}\)
\(x=\dfrac{1}{4}\)
b) \(\left(x\div\dfrac{5}{3}-\dfrac{2}{3}\right)\cdot\dfrac{1}{2}+\dfrac{3}{4}=1\dfrac{1}{12}\)
\(\left(x\div\dfrac{5}{3}-\dfrac{2}{3}\right)\cdot\dfrac{1}{2}+\dfrac{3}{4}=\dfrac{13}{12}\)
\(\left(x\div\dfrac{5}{3}-\dfrac{2}{3}\right)\cdot\dfrac{1}{2}=\dfrac{13}{12}-\dfrac{3}{4}\)
\(\left(x\div\dfrac{5}{3}-\dfrac{2}{3}\right)\cdot\dfrac{1}{2}=\dfrac{1}{3}\)
\(x\div\dfrac{5}{3}-\dfrac{2}{3}=\dfrac{1}{3}\div\dfrac{1}{2}\)
\(x\div\dfrac{5}{3}-\dfrac{2}{3}=\dfrac{2}{3}\)
\(x\div\dfrac{5}{3}=\dfrac{2}{3}+\dfrac{2}{3}\)
\(x\div\dfrac{5}{3}=\dfrac{4}{3}\)
\(x=\dfrac{4}{3}\cdot\dfrac{5}{3}\)
\(x=\dfrac{20}{9}\)
a: =>x=7/20-1/10=7/20-2/20=5/20=1/4
b: =>(x-5:3-2/3)x1/2=13/12-3/4=13/12-9/12=4/12=1/3
=>x-5:3-2/3=2/3
=>x:5/3=4/3
=>x=20/9
