`5) 3/-8 - x + 1/6 = -2 + 1/4x`
`(-3/8 + 1/6) - x = -2 + 1/4x`
`(-9/24 + 4/24) - x = -2 + 1/4x`
`-5/24 - x = -2 + 1/4x`
`-x - 1/4 x = -2 + 5/24`
`x . (-1) - 1/4 . x = -48/24 + 5/24`
`x . ((-1) - 1/4) = -43/24`
`x . (-5)/4 = -43/24`
`x =-43/24 : (-5)/4`
`x = -43/24 . (-4)/5`
`x= 43/30`
Vậy `x = 43/30`
`#caty09`