If it's not what You are looking for type in the equation solver your own equation and let us solve it.
m in (-oo:+oo)
m/2 = -40 // + 40
m/2+40 = 0
1/2*m+40 = 0 // - 40
1/2*m = -40 // : 1/2
m = -40/1/2
m = -80
m = -80
| X^2+2xy-24y^2=0 | | (28/42)·(15/36)= | | X+33=y+4 | | 0=x^2-2x+420 | | X^3+6x^2=27x | | (2y-9)+5=2(x-1)-4 | | 0.008x^6+0.12x^4+0.6x^2-3.219x+1=0 | | 3-10d=-17 | | 3d+20=5 | | 3-10d=-7 | | 6x+2=-93-9x | | 3(3r+12)=2(4r+7) | | 6x-4(2x+5)=3x-2 | | 3x-4+2x=4x-3+2x-10 | | 3(y+1)-2(y-2)=0 | | 3x-5=0.5x+2x | | 3x+2-5=4x-5+2x | | 100*x=y*0.039 | | X+5=2y-4 | | 0.3(4+2c)=0.1(c+2) | | 100+x=y-3.9 | | -18x+3y=24 | | 3t-2q= | | F(10x)= | | 20+3w=w-6 | | -10x+4y=6 | | x-6/4-x-4/6=1-x/10 | | 2x+7=5x-19 | | 2m+7.1=9.6 | | 2x+12=9x-9 | | x/4-32/4x=1 | | 0.3(y-4)=0.3(2y+6) |