Question

x +3/4x7/10=53/40

(2/5+4/7):x=17/5

Answer 1

x + 21/40 = 53/40

x = 53/40 - 21/40

x = 32/40 = 4/5

 

34/35 : x = 17/5

x = 34/35 : 17/5

x = 2/7

Answer 2

`x + 3 / 4 xx 7 / 10 = 53 / 40`

`x + 21 / 40 = 53 / 40`

`x = 53 / 40 - 21 / 40`

`x = 32 / 40`

`x = 4 / 5`

____________________________

`( 2 / 5 + 4 / 7 ) : x = 17 / 5`

`( 14 / 35 + 20 / 35 ) : x = 17 / 5`

`34 / 35 : x = 17 / 5`

`x = 34 / 35 : 17 / 5`

`x = 34 / 35 xx 5 / 17`

`x = 2 / 7`

Answer 3

x + 3/4 x 7/10 = 53/40

x + 21/40 = 53/40

x = 53/40 - 21/40 

x = 4/5

 

(2/5 + 4/7) : x = 17/5

34/35 : x = 17/5

x = 34/35 : 17/5

x = 2/7

Answer 4

\(x+\dfrac{3}{4}\times\dfrac{7}{10}=\dfrac{53}{40}\)

\(x+\dfrac{21}{40}\)

\(x=\dfrac{53}{40}-\dfrac{21}{40}\)

\(x=\dfrac{32}{40}\)

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

 

\(\left(\dfrac{2}{5}+\dfrac{4}{7}\right):x=\dfrac{17}{5}\)

\(\dfrac{34}{35}:x=\dfrac{17}{5}\)

        \(x=\dfrac{34}{35}:\dfrac{17}{5}\)

        \(x=\dfrac{34}{35}\times\dfrac{5}{17}\)

        \(x=\dfrac{2}{7}\)