Bài 2 (2 điểm) Tìm x biết: a) $x+\frac{3}{5}$= $\frac{1}{10}$  b) $\frac{2}{3}:x $= $2,4- \frac{4}{5}$  c)  $\frac{5}{4}$ $(x- \frac{3}{5})$ = $\frac{-1}{8}$ 

`Accnswer`

`a)x+3/5=1/10`

`=>x=1/10-3/5`

`=>x=1/10-6/10`

`=>x=-5/10`

`=>x=-1/2`

Vậy `x=-1/2`

`b)2/3:x=2,4-4/5`

`=>2/3:x=12/5-4/5`

`=>2/3:x=8/5`

`=>x=2/3 . 5/8`

`=>x=10/24`

`=>x=5/12`

Vậy `x=5/12`

`c)5/4(x-3/5)=(-1)/8`

`=>x-3/5=(-1)/8 . 4/5`

`=>x-3/5=-1/10`

`=>x=-1/10+3/5`

`=>x=-1/10+6/10`

`=>x=5/10`

`=>x=1/2`

Vậy `x=1/2`