How would I solve 6/7s-3/4=4/5-1/7s+1/6

multiply each term by 420 , the LCD

360s - 315 = 336 - 60s + 70
420s = 721
s = 721/420 = 103/60

or

6/7s = 1/7s = 4/5+1/6+3/4
7/7s = 103/60
s = 103/60