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 = 5/21 // - 5/21
x+6/7-(5/21) = 0
x+6/7-5/21 = 0
x+13/21 = 0 // - 13/21
x = -13/21
x = -13/21
| (5-8x)+10=15 | | F(x)=-x^2+2x+4 | | -6-18y=30 | | 17=1-5x | | 3/4b+5=128 | | 3/4Y+2/3=5/6 | | S=2x^2+4x-30 | | 241=x+3.56 | | 3x+6=6x+18 | | y-80=-11/8(x-0) | | 5(x-2)+1=3x-1 | | 4x+9=7x-13 | | N/5+3=9 | | 4(2-x)=2(x-3) | | 5y-1=14 | | 82=x-17 | | 3y+2=20 | | 7(d+9)=7(d-5) | | 6x=432 | | 93-28x=63 | | 5x^2+2x=-10 | | -3(a+14)=6(2a+3) | | 2=-1k/5 | | 2y-31=9y+24 | | 4x/6=10 | | x^2+3xy=0 | | t+10=6t-14 | | 4.3x+51.9=1.8-12.4x | | 3(w+6)-7w=-18 | | 7.40=(a+o) | | x^2+xy=0 | | X+17=21 |