If it's not what You are looking for type in the equation solver your own equation and let us solve it.
n in (-oo:+oo)
(-2/3)*n = 20 // - 20
(-2/3)*n-20 = 0
-2/3*n-20 = 0 // + 20
-2/3*n = 20 // : -2/3
n = 20/(-2/3)
n = -30
n = -30
| 3x+10+148+x+112=540 | | -4(a+5)+6a+20=-6 | | -3y+13=0 | | .4(x-3)=10 | | 4x+8+3x=3-2x-5 | | 71=9c-1 | | 100[0.07(p+9)]= | | -8-6=9m-8(2+m) | | x^4+4x^3+5x^2-9=0 | | 5e-1=19 | | 9a-20=52 | | (5x^2+13)(x+6)=0 | | V+1=-18 | | -8+9=8x-7(x+8) | | -6a-2+2a=22 | | sen^2ydx+cos^2xdy=0 | | -12-2(4x+2)=0 | | 6+35x=21x+10 | | 14x^2+2x=12 | | -c/6=12 | | 3x+x+2=42 | | 9q+5q=59-3 | | 3x+10+148+x=540 | | 4x+11=-24-3x | | 7*(x)=48 | | 15x^2+2x=12 | | 9t^2+11t+2=0 | | -3t+4t-13=8 | | (x-2/3)-1=0 | | 24-4x=12-7x | | 4(t-2)-3t=6 | | 0.5x+0.6x=180 |