Question

Tìm x:

a) \(\dfrac{7}{12}+x=\dfrac{3}{2}\)

 

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

Answer 1

a)

`7/12+x=3/2`

`=>x=3/2-7/12`

`=>x=18/12-7/12`

`=>x=11/12`

 

b)

`1/7:x=1/3`

`=>x=1/7:1/3`

`=>x=1/7xx3`

`=>x=3/7`

Answer 2

a)7/12+x=3/2

X=3/2-7/12

X=11/12

B)1/7:x=1/3

X=1/7:1/3

X=3/7

Answer 3

a/ x = 3/2 - 7/12

    x = 18/12 - 7/12 ( có 3/2 =3 x 6/ 2 x 6 = 18/12)

    x = 11/12 <phân số tối giản >

b/ x = 1/7 : 1/3

    x = 1/7. 3/1

    x = 3/7 < phân số tối giản >