Question

Answer 1

\(\dfrac{3}{8}:x=\dfrac{3}{4}\)

\(x=\dfrac{3}{8}:\dfrac{3}{4}=\dfrac{3}{8}\times\dfrac{4}{3}\)

\(x=\dfrac{4}{8}=\dfrac{1}{2}\)

_____________________

\(x+\dfrac{2}{3}=\dfrac{7}{5}\)

\(x=\dfrac{7}{5}-\dfrac{2}{3}=\dfrac{21}{15}-\dfrac{10}{15}\)

\(x=\dfrac{11}{15}\)

_____________________

\(\dfrac{2}{5}\times x=\dfrac{5}{4}\)

\(x=\dfrac{5}{4}:\dfrac{2}{5}=\dfrac{5}{4}\times\dfrac{5}{2}\)

\(x=\dfrac{25}{8}\)

_____________________

\(\dfrac{7}{4}-x=\dfrac{3}{8}\)

\(x=\dfrac{7}{4}-\dfrac{3}{8}=\dfrac{42}{24}-\dfrac{9}{24}\)

\(x=\dfrac{33}{24}=\dfrac{11}{8}\)

Answer 2

a: x=3/8:3/4=3/8*4/3=4/8=1/2

b: x=7/5-2/3=21/15-10/15=11/15

c: x=5/4:2/5=25/8

d: x=7/4-3/8=11/8