Question

Tìm x giúp em

  

Answer 1

\(\dfrac{-3}{x+1}=\dfrac{4}{2-2x}\)

\(\Rightarrow\left(-3\right).\left(2-2x\right)=4.\left(x+1\right)\)

\(\Rightarrow-6+6x=4x+4\)

\(\Rightarrow6x-4x=4+6\)

\(\Rightarrow2x=10\)

\(\Rightarrow x=10:2\)

\(\Rightarrow x=5\)

Answer 2

=>-3(2-2x)=4(x+1)

=>4x+4=6x-6

=>2x=-10

=>x=-5

Answer 3

`#lv`

`3/(x+1)=4/(2-2x)`

`=>-3.(2-2x)=4.(x+1)`

`=>-6+6x=4x+4`

`=>6x-4x=4+6`

`=>2x=10`

`=>x=5`

Vậy `x=5`