1 1/7 x x = 8/7 x-8,01=1,99 x : 4 x 3,5 + 6,3 x : 3,5 = 17,8 + 5,4 x + 1/8 = 1/2 – 1/3 x – 3 1/2 = 2 1/5 làm hết nha

`a) 1 1/7 × x = 8/7`

`x = 8/7 : 1 1/7`

`x = 8/7 : 8/7`

`x=1`

`b) x-8,01=1,99`

`x=1,99+8,01`

`x=10`

c) Chưa Rõ

`d) x:3,5=17,8+5,4`

`x:3,5=23,2`

`x=23,2×3,5`

`x=81,2`

`e) x+1/8=1/2-1/3`

`x+1/8=3/6-2/6`

`x+1/8=1/6`

`x=1/6-1/8`

`x=8/48-6/48`

`x=2/48`

`x=1/24`

`f) x-3 1/2=2 1/5`

`x=2 1/5+3 1/4`

`x=11/5+13/4`

`x=109/20`