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)
x+6/7 = -64/7 // + -64/7
x+6/7-(-64/7) = 0
x+6/7+64/7 = 0
x+10 = 0 // - 10
x = -10
x = -10
| 6x+5=9x-21 | | -1/2+x=17/2 | | x-1/3=17/3 | | 10=x+3 | | 22=x+10 | | 2/3x=20/3 | | 3k+3=7k-15 | | 9h-11=13h+9 | | x-4=-36/11 | | x+3/10=-7/10 | | 3/5+x=4/15 | | -5/8+x=-1/8 | | x+4=19/4 | | -5/7x=-5/63 | | 7+2x=6x-9 | | 74=1,6x-12 | | 2x-3=7x+12 | | x+4=23/5 | | 6/7x=36/7 | | x+6/7=29/42 | | x+3/10=-9/20 | | -1/2+x=-1/4 | | 3y+2=8-5y | | x-3=-17/8 | | x-6=-20/3 | | 8x+3=3x+12 | | x/3=6/7 | | x/-3=-3/5 | | x+2=14/5 | | x-5/7=30/7 | | x+1/6=-23/6 | | x-5/8=-57/40 |