Question

Answer 1

`4/3 -x=1/5`

`       x = 4/3 - 1/5`

`       x =17/15`

_______________________________

`2/7 xx x = 3/8`

`          x = 3/8 : 2/7`

`          x = 3/8 xx 7/2`

`         x  = 21/16`

______________________________

`1/4 + x = 3/2`

`         x = 3/2 - 1/4`

`         x = 5/4`

___________________________________

`2/9 : x =3/4`

`        x = 2/9 : 3/4`

`        x = 2/9 xx 4/3`

`        x = 8/27`

Answer 2

\(a,\dfrac{4}{3}-x=\dfrac{1}{5}\\ =>x=\dfrac{4}{3}-\dfrac{1}{5}\\ =>x=\dfrac{17}{15}\\ b,\dfrac{2}{7}x=\dfrac{3}{8}\\ =>x=\dfrac{3}{8}:\dfrac{2}{7}\\ =>x=\dfrac{21}{16}\\ c,\dfrac{1}{4}+x=\dfrac{3}{2}\\ =>x=\dfrac{3}{2}-\dfrac{1}{4}\\ =>x=\dfrac{5}{4}\\ d,\dfrac{2}{9}:x=\dfrac{3}{4}\\ =>x=\dfrac{2}{9}:\dfrac{3}{4}\\ =>x=\dfrac{8}{27}\)

Answer 3

\(\dfrac{4}{3}-x=\dfrac{1}{5} \)
\(x=\dfrac{20-3}{15}=\dfrac{17}{15}\)