Question

a, x - 3/4=6 x 3/8

b, 7/8 : x=3 - 1/2

c, x + 1/2 x 1/3=3/4

Answer 1

a) \(x-\dfrac{3}{4}=6\times\dfrac{3}{8}\)

\(x-\dfrac{3}{4}=\dfrac{9}{4}\)

\(x=\dfrac{9}{4}+\dfrac{3}{4}\)

\(x=3\)

b) \(\dfrac{7}{8}:x=3-\dfrac{1}{2}\)

\(\dfrac{7}{8}:x=\dfrac{5}{2}\)

\(x=\dfrac{7}{8}:\dfrac{5}{2}\)

\(x=\dfrac{7}{20}\)

c) \(x+\dfrac{1}{2}\times\dfrac{1}{3}=\dfrac{3}{4}\)

\(x+\dfrac{1}{6}=\dfrac{3}{4}\)

\(x=\dfrac{3}{4}-\dfrac{1}{6}\)

\(x=\dfrac{7}{12}\)

Answer 2

a) \(x-\dfrac{3}{4}=6\times\dfrac{3}{8}\) 

     \(x-\dfrac{3}{4}=\dfrac{9}{4}\) 

             \(x=\dfrac{9}{4}+\dfrac{3}{4}\) 

             \(x=3\) 

b) \(\dfrac{7}{8}\div x=3-\dfrac{1}{2}\) 

    \(\dfrac{7}{8}\div x=\dfrac{5}{2}\) 

            \(x=\dfrac{7}{8}\div\dfrac{5}{2}\) 

            \(x=\dfrac{7}{20}\) 

c)  \(x+\dfrac{1}{2}\times\dfrac{1}{3}=\dfrac{3}{4}\) 

             \(x+\dfrac{1}{6}=\dfrac{3}{4}\) 

                      \(x=\dfrac{3}{4}-\dfrac{1}{6}\) 

                       \(x=\dfrac{7}{12}\)

Answer 3

a) 3

b) 7/20

c) 7/12