Question

A)x-1/2 =4/9                                B)18/25 - x =2/5

C)X x 1/2 =31/6                           D)39/5 : x =3/7

Answer 1

a) \(x-\dfrac{1}{2}=\dfrac{4}{9}\)

\(x=\dfrac{4}{9}+\dfrac{1}{2}\)

\(x=\dfrac{17}{18}\)

b) \(\dfrac{18}{25}-x=\dfrac{2}{5}\)

\(x=\dfrac{18}{25}-\dfrac{2}{5}\)

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

c) \(x\times\dfrac{1}{2}=\dfrac{31}{6}\)

\(x=\dfrac{31}{6}:\dfrac{1}{2}=\dfrac{31}{6}\times2\)

\(x=\dfrac{31}{3}\)

d) \(\dfrac{39}{5}:x=\dfrac{3}{7}\)

\(x=\dfrac{39}{5}:\dfrac{3}{7}=\dfrac{39}{5}\times\dfrac{7}{3}\)

\(x=\dfrac{91}{5}\)

Answer 2

A) x - 1/2 = 4/9

x = 4/9 + 1/2

x = 8/18 + 9/18

x = 17/18

B) 18/25 - x = 2/5

x = 18/25 - 2/5

x = 18/25 - 10/25

x = 8/25

C) x × 1/2 = 31/6

x = 31/6 : 1/2

x = 31/6 × 2

x = 31/3

D) 39/5 : x = 3/7

x = 39/5 : 3/7

x = 39/5 × 7/3

x = 91/5