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)
-8 = -((2/3)*x)-20 // + -((2/3)*x)-20
(2/3)*x-8+20 = 0
2/3*x+12 = 0 // - 12
2/3*x = -12 // : 2/3
x = -12/2/3
x = -18
x = -18
| 9x^2-49y^2=441 | | 4x-2+2=4-(-9+3) | | 12+9=42x+28 | | 4x+39=13x-57 | | 10x-1-40x-80=-531 | | 0.2x=75 | | 5(5a-7)=140 | | 6+5a-6a2/3-2a | | 2x^2-1x+5=0 | | 25x^2-16y^2=400 | | 0,2-0,01x=0,4x-0,08+0,11x | | (12+9)/(6x+4)+5=12 | | -a+3=5s+21 | | 54x+8=2 | | X^2+14x+c=0 | | -4(3-6x)=108 | | 30p-75-10p+25=60p-80 | | x^2=-15-8x | | P=r+w/t | | 9x^2=-5x-8 | | m^2-21m+110=0 | | x^2+2x-46=2 | | x^6k/3 | | -5-2(x+2)=-81 | | -5-2(x+2)=-91 | | 5-2(x+4)=2x+5 | | 5/11=3b/11+8b/22 | | (4x+40)+(8x+20)=180 | | 4(2x+7)=8(-12+9x) | | 36y^2-9x^2=324 | | 7(-2b+6)=98 | | A-(-20)=-13 |