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)
(2/3)*x = -13 // + 13
(2/3)*x+13 = 0
2/3*x+13 = 0 // - 13
2/3*x = -13 // : 2/3
x = -13/2/3
x = -39/2
x = -39/2
| 12*x^2-(120*x)+200=0 | | w^2-12w+20= | | 10+6x=7x | | r^2-10r+24= | | c^2-14c+48= | | 17-6x=7x | | t^2-2t-63= | | v^2+13v+42= | | a^2+14a+48= | | x=-5+10x | | x=10x-5 | | 10x-x=5 | | 5+11x-2(2x+4)-3x=10x-9 | | 19x-x=8 | | 7x-5=2x+50 | | 19x=8-5x | | 19x=8-8 | | (2/5)x+5=12 | | 2-2c-3c=1 | | 2x-3=x-16 | | -5x=7x-8 | | -5x=7-8 | | 1a+2c=0 | | 1/14x^-1/7x=1 | | 10-9x=135-44x | | 7(7g+6)*4=59.5 | | 20x-5=x | | 4d+3=2d+11 | | x=20-5x | | 6x+2=14-2x | | x=19+6x | | 1*4c=0 |