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)
(-4/5)*m = 2.23 // - 2.23
(-4/5)*m-2.23 = 0
-4/5*m-2.23 = 0 // + 2.23
-4/5*m = 2.23 // : -4/5
m = 2.23/(-4/5)
m = -2.7875
m = -2.7875
| 4(3x+4x)-1=91 | | .5z-1=-13 | | 7-2Inx=3 | | 800x-0.55=400x+0.45 | | f(x)=9x^2+4x+9 | | 2(j-4)=10 | | 2*16+46=x | | 2*16+46= | | x^2-cx-6c^2=0 | | 5x^10-8x^7= | | .66c+6=18 | | 3x/5-2 | | 20=y/6 | | 3^2/2n4=3 | | (1-2sinx)/cosx | | 2(5x-8)=7-(5-x) | | 1-2sinx/cosx | | (3x+1)2=8 | | -18=.33x-(-9) | | x^2+676x-11840=0 | | 50/288 | | sin(x)+sin(3x)= | | -4.9t^2+12t+600=0 | | x(6-x)-7.2=0 | | 26+y+26y=80 | | 8=-4-.33a | | -4.9t^2+13t+300=0 | | 18+y+18y=80 | | 100x-0.16=300x+0.94 | | 15+y+15y=80 | | 10+y+10y=80 | | 8+y+8y=80 |