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)
(9/10)*m-28 = (7/8)*m+12 // - (7/8)*m+12
(9/10)*m-((7/8)*m)-28-12 = 0
(9/10)*m+(-7/8)*m-28-12 = 0
1/40*m-40 = 0 // + 40
1/40*m = 40 // : 1/40
m = 40/1/40
m = 1600
m = 1600
| 8.35/100 | | 3(x+4)=9x+10 | | Sqrt(u+6)=u | | 7-8m=3 | | 2(4-x)=9x-1 | | 14d=56 | | 23x^2-5x-42=0 | | 15-6y=2y-4(y+1) | | 7x+5-3x+1=2x+2 | | 4x+10y=40fory | | 10a=12 | | 204=w | | 24x-18=-2 | | 3(2h-3)+2(h+3)= | | 6(2y-3)= | | h(x)=2x-6x-36 | | -24=6a | | 2x+5(x-4)=2(x-5) | | 5x^3-125x^2=0 | | 8-2t=5t-13 | | -8x=-9 | | p^2=5000p | | 3s-27=-165 | | E^3x+1=18 | | 10x^3/x^2-1=0 | | 4/9x=28 | | .5x+30=5 | | 12+3u/4=-6 | | 10x+19x-8+2=-6x+2-8 | | X-4=10/5 | | 11x=-132 | | 4(-2x+3)=10x-15 |