Question

Câu 2. Tìm x:

a/ 136,5 –X = 5 ,4 x 1,2                                        b/ 259,2 : X = 39 + 4,2            

Answer 1

a: =>136,5-x=6.48

=>x=130,02

b: =>259,2:x=43,2

=>x=6

Answer 2

\(a.136,5-x=5,4\times1,2\)

\(136,5-x=6,48\)

\(x=136,5-6,48\)

\(x=130,02\)

 

\(b.259,2:x=39+4,2\)

\(259,2:x=43,2\)

\(x=258,2:43,2\)

\(x=6\)

Answer 3

a/ `136,5-x=5,4 xx 1,2`

`136,5 - x=6,48`

`x=136,5 - 6,48`

`x=130,02`

``

b/ `259,2 :x=39+4,2`

`259,2 :x=43,2`

`x=259,2 : 43,2`

`x=6`