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)
3*x-x-(12/9) < 12 // - 12
3*x-x-(12/9)-12 < 0
3*x-x-4/3-12 < 0
2*x-40/3 < 0 // + 40/3
2*x < 40/3 // : 2
x < 40/3/2
x < 20/3
x in (-oo:20/3)
(-oo:20/3)
| y=-2x-22 | | 9.9u+0.92=10u+2.71 | | x^2-8x-10008=0 | | 12.7x=-16x^2+27.2x | | 1.245x^2-58.27x+322.0352=0 | | 6b+4=5b+16 | | -7x^2+7x=9 | | 20x/(8x^2-4x) | | .55555555555555555555555555555555555555555(F-32)=25 | | 1x+1x+5x+5x=10 | | -20+3m+6=20+m | | 7.4c=7c-7.04 | | -4s=-13-5s | | 3.85x^2+1.4x-0.6=0 | | -10-9d=-10d+4 | | x*0.5x=9/20 | | 5(4x-2)=6(3x+2) | | -10-9d=-10+4 | | 65x+70=460 | | 20+7j+17=-11j-17 | | 4y+2=y+10+y | | 6-2x+8=3x-1 | | -14+14=10 | | -8+4t=4+8t | | -3x-12=2x+8 | | 17n-3-4=10 | | -10-3f=2f | | 2x+ax=5 | | 5(7-x)=2x | | 4(6-x)=2x | | -9p+9=2p-9-9p | | 3x-x^2-4x-2=0 |