Question

x:3+x:4+x:12=6

Answer 1

`x:3+x:4+x:12=6`

`x xx(1)/(3)+x xx(1)/(4)+x xx(1)/(12)=6`

`x xx((1)/(3)+(1)/(4)+(1)/(12))=6`

`x xx(4+3+1)/(12)=6`

`x xx(8)/(12)=6`

`x xx (2)/(3)=6`

`x =6:(2)/(3)=9`

Answer 2

 

 

 

\(x.\dfrac{1}{3}+x.\dfrac{1}{4}+x.\dfrac{1}{12}=6\)

\(x.\left(\dfrac{1}{3}+\dfrac{1}{4}+\dfrac{1}{12}\right)=6\)

\(x.\dfrac{2}{3}=6\)

\(x=6:\dfrac{2}{3}\)

\(x=9\)

Answer 3

x:3+x:4+x:12=6

=>x:(3+4+12)=6

=>x:19=6

=>x=19x6

=>x=114 

Vậy x=114

Answer 4

X÷3+x÷4+x÷12=6

=>x÷(3+4+12)=6

=>x÷19=6

=>x=6×19

=>x=114

Vậy x=114