If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(-6/7)*x = -6/7 // + -6/7
(-6/7)*x-(-6/7) = 0
(-6/7)*x+6/7 = 0
6/7-6/7*x = 0 // - 6/7
-6/7*x = -6/7 // : -6/7
x = -6/7/(-6/7)
x = 1
x = 1
| x+6/7=-5/84 | | x-2/9=4/9 | | 6m-30=42 | | -1+x=-5/6 | | x+7=27/4 | | 8c-17=15 | | x+1/3=4/3 | | -1/2x=-3 | | -4/3=x+2/3 | | 1/4x=-1/4 | | x+2/3=38/3 | | 5p+9=39 | | 20/21=x+2/3 | | x+2/7=85/77 | | x+3/7=13/14 | | -1+x=6 | | -9/10+x=-1/15 | | 4y-15=21 | | x+5/7=46/35 | | x+6=33/5 | | -11/8=x+5/8 | | 4y-14=21 | | -1/9+x=71/9 | | -1/2+x=7/2 | | 2+x=7/6 | | x-1/2=15/2 | | 23/60=x+3/10 | | x+1/2=25/2 | | x+9=55/6 | | -29/3=x-10 | | -6x=-2 | | x-10=-131/12 |