Question

a) x - 4/7 = 8/9 

x         = ?

b) X x 4/9 = 7

x              = ? 

c) x : 3/7 = 8/11

   x          = ?

MONG MỌI NGƯỜI TRẢ LỜI Ạ !

Answer 1

a, x = 92/63

b,  x = 63/4

c, x =  24/77

Answer 2

a) x= 8/9+4/7

x=92/63

b)x= 7:4/9

x= 63/4

c) x = 8/11x3/7

x= 24/77

Answer 3

a: x=8/9+4/7=92/63

b: x=7:4/9=63/4

c: x=8/11x3/7=24/77

Answer 4

a) \(x-\dfrac{4}{7}=\dfrac{8}{9}\)

    \(x=\dfrac{8}{9}+\dfrac{4}{7}\)

    \(x=\dfrac{56}{63}+\dfrac{36}{63}\)

    \(x=\dfrac{92}{63}\)

b) \(x\times\dfrac{4}{9}=7\)

    \(x=7:\dfrac{4}{9}\)

    \(x=7\times\dfrac{9}{4}\)

    \(x=\dfrac{63}{4}\)

c) \(x:\dfrac{3}{7}=\dfrac{8}{11}\)

   \(x=\dfrac{8}{11}\times\dfrac{3}{7}\)

   \(x=\dfrac{24}{77}\)

   

 

Answer 5

a, x = 92/63

b,  x = 63/4

c, x =  24/77