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-(3*b) > 11-((15*b)/7) // - 11-((15*b)/7)
(15*b)/7-(3*b)-11+2 > 0
(15*b)/7-3*b-11+2 > 0
-6/7*b-9 > 0 // + 9
-6/7*b > 9 // : -6/7
b < 9/(-6/7)
b < -21/2
b in (-oo:-21/2)
(-oo:-21/2)
| 0.5x-2.8=2.8x+2.4 | | 16t^2-30t+12=0 | | y=-2abs(x+2)-5 | | 8t^2-15t+12=0 | | 50(3-e^2x)=125 | | B/4b=8 | | ln(x)=0.313 | | -7x^2=448 | | lnx=0.313 | | 3240=15*12*x | | (8x+72)+2x+28=180 | | 3*x+4=7 | | 20+(-12)=3y+y | | (x+9)(x-2)=42 | | b-1/4-1/2 | | 2(3+x)+5(x-7)= | | 10+e^4x=18 | | x/9-14=x/9 | | 11x^2+2x-1=0 | | 4y+16+3y= | | b/6-7=-1 | | 7x+4x+3+9=7x+3+3x | | 3+3x=57 | | w/7-0.3 | | m-3+2=[-3-8]+7 | | 5.4k+14.6-10.1k=12.8-3.5k-0.6 | | 2n^2-1=0 | | T/4-16 | | 1/3s-1/5 | | 4y-2=6y | | 2x+7=10x+29 | | -173=4x+3(-6x-11) |