-3/7x = 6/35

Badly need your help. Appreciate it greatly.

The way you typed it would mean

(-3/7)x = 6/35
-3x/7 = 6/35
x = (6/35)(-7/3) = -2/5

If you meant
-3/(7x) = 6/35
42x = -105
x = -5/2