If it's not what You are looking for type in the equation solver your own equation and let us solve it.
b in (-oo:+oo)
(-2/9)*b > -12 // + 12
(-2/9)*b+12 > 0
12-2/9*b > 0 // - 12
-2/9*b > -12 // : -2/9
b < -12/(-2/9)
b < 54
b in (-oo:54)
(-oo:54)
| (4u+3y-6)(5u+3y)= | | 13+x=-16 | | c-66=4w | | m+(-9)=34 | | -16t^2+24t+16=16 | | 5x+2+9+x=3x-10 | | y=-x^4+3x^2 | | 3n-10=62 | | 3y+x=700 | | 4y=18-39/2 | | y+21=-7 | | 4y=20-100/3 | | 9y=24-168/5 | | 4y=6-33/2 | | 16x+2= | | 4.33x+4=18.789+2x | | 3x1/4=4 | | 2x^3+2x^2=0 | | 3t-14=49 | | 8/9x-2/3=5 | | -4y+8=4 | | y=6/5x-10 | | X-3y=46 | | 6x/5-7=-x/5 | | 9(d+55)=3(d-3)+6d | | 2.35x+21.15=42.3 | | 2-2x^2+2x+12=0 | | 25x^2y+35x^2z+20x^2= | | 6x+9=10x+9-4x | | 20/12/2 | | 45/x=30 | | 2×3/6÷48 |