If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
1.5/2.8 = x/8.4 // - x/8.4
1.5/2.8-(x/8.4) = 0
1.5/2.8-0.11904762*x = 0
0.53571429-0.11904762*x = 0 // - 0.53571429
-0.11904762*x = -0.53571429 // : -0.11904762
x = -0.53571429/(-0.11904762)
x = 4.5
x = 4.5
| 6(x^2-2x)=-x+10 | | W/6=2.8/7 | | -3y+7=-3y-5 | | 3x-9=-8 | | 8(d+2)=58-6d | | 1/6m-7=2/3 | | 3.0x+2.4=0.1x+4 | | -8h+10h=2h | | 7b+2=8b | | F(x)=(2x^2)/(x^2-36) | | 30+2x+5x=79 | | 3e^2x=6.5 | | X-9y=63 | | V/5-9=8 | | -3+9y=18 | | b+1.5b+2b=5 | | 6(x^2-2x)=x+10 | | 9m+12m^2=0 | | 4(160+-6.7y)+10y=480 | | 64=4v+8 | | 4x+52=8x-10 | | T-8.5=2.1 | | 3x+20y=480 | | -13f=-5f+4 | | 8x-42=4x+35 | | p(x)=1800-2x | | 9-9n=-9n | | 8x+6+4=4 | | 9j-9j=0 | | 8+3x=16-x | | 8-x=3x-6 | | 6+10p=12 |