You can put this solution on YOUR website! [(3x-1)/8] - [(2x+1)/3] = [(1-x)/4] - 1 Multiply everything by 24 to clear the fractions
3(3x-1)-8(2x+1)=6(1-x)-24
9x-3-16x-8=6-6x-24; collect terms
-x=-7
x=7
Check
(20/8)-(15/3)=(-6/4)-1
2 1/2 -5=-1 1/2-1
-2 1/2= -2 1/2