Question

giúp vs?

Answer 1

`210-5x=200`

`5x=210-200`

`5x=10`

`x=10:5`

`x=2`

Vậy `x=2`

________________________

`210:x-10=20`

`210:x=20+10`

`210:x=30`

`x=210:30`

`x=7`

Vậy `x=7`

_______________________

`410-5.(x-1)=200`

`5.(x-1)=410-200`

`5.(x-1)=210`

`5x-5=210`

`5x=210+5`

`5x=215`

`x=215:5`

`x=43`

Vậy `x=43`

_________________________

`36:(x-5)=2.2`

`36:(x-5)=4`

`x-5=36:4`

`x-5=9`

`x=9+5`

`x=14`

Vậy `x=14`

Answer 2

a: =>5x=10

hay x=2

b: =>210:x=30

hay x=7

c: =>5(x-1)=210

=>x-1=42

hay x=43

d: =>36:(x-5)=4

=>x-5=9

hay x=14

Answer 3

\(a,5x=210-200\\ 5x=10\\ =2\\ b,210:x=30\\ x=70\\ c,5\left(x-1\right)=210\\ x-1=42\\ x=43\\d,36:\left(x-5\right)=4\\ x-5=9\\ x=14\)