If it's not what You are looking for type in the equation solver your own equation and let us solve it.
s in (-oo:+oo)
(-2/5)*s = 4/15 // - 4/15
(-2/5)*s-(4/15) = 0
(-2/5)*s-4/15 = 0
-2/5*s-4/15 = 0 // + 4/15
-2/5*s = 4/15 // : -2/5
s = 4/15/(-2/5)
s = -2/3
s = -2/3
| 5(2x-8)=-70 | | {3}=3 | | 3a-1=11(a-7) | | 2p-2.1=-4.7 | | -53x=5x^2 | | 4x+7=49-4x | | 5x^3+3x^2+25x+5=0 | | 3m^2=25m | | 3+m=45 | | 1/2x^2 | | 24=-1/3t | | t(5+t)=4(t+5) | | 2/3y-11=-9 | | 0.5x^2-x=0 | | 4n^2-88n=-468 | | 3n^2=-13n-10 | | 49a^2+49a+49a+49+4a+4-2=0 | | 1/5n=-9 | | 36=5t+t^2 | | 8y^2-3y^2=5y+7y | | 0=7p^2-33p | | (lnx-4)(x^2+9x)=0 | | -7/8m=1-4 | | 3(x+5)=3 | | y=-0.25(x^2)+3x+6 | | 0=7t^2+25t | | 5/3u=2/9 | | 0=9p^2+37p | | 3/4y=-1/2 | | 0=9p^2+37 | | 3-4y=-1/2 | | 7m^2-42m=0 |