Giải giúp em với ạ

Em cảm ơn ạ

`x +3/5=2/3`

`x=2/3 -3/5`

`x=10/15 -9/15`

`x=1/15`

Vậy `x=1/15`

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`3/7 - x=2/5`

`x=3/7 -2/5`

`x=15/35 -14/35`

`x=1/35`

Vậy `x=1/35`

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`4/9 - 2/3 x=1/3`

`2/3 x =4/9 -1/3`

`2/3 x =4/9 -3/9`

`2/3 x =1/9`

`x=1/9 : 2/3`

`x=1/9 . 3/2`

`x=3/18`

`x=1/6`

Vậy `x=1/6`

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`3/10 x -1 1/2 =(-2/7) : 5/14`

`3/10 x -3/2 =(-2/7) . 14/5`

`3/10 x -3/2 =-28/35=-4/5`

`3/10 x=-4/5 +3/2`

`3/10 x=-8/10 +15/10`

`3/10 x=7/10`

`x=7/10 : 3/10`

`x=7/10 . 10/3`

`x=70/30=7/3`

Vậy `x=7/3`