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)
b/20 = 15 // - 15
b/20-15 = 0
1/20*b-15 = 0 // + 15
1/20*b = 15 // : 1/20
b = 15/1/20
b = 300
b = 300
| 2(X-3)-4=4X-1/3 | | 8r-7(-3r+8)=6(r+6) | | b^2-10b+18=2 | | 10+7r=9r-4 | | a^2-4a-24=8 | | k^2-21=-5 | | M-49=576 | | 4v/7=20 | | x-32=-17 | | -5+4=-36 | | -2j=7-3j | | 23+a=461 | | 1/2n-14=12 | | 2x-(2x+12)=6x | | -1+8t=10t-9 | | -14=-7u | | 3q+12= | | x=-6+9y-1 | | 14+14x-x^2=0 | | 5x=1450 | | 2cos^2x-5cosx+3=0 | | 10-2h=-10+8h | | 3x+8=5x-26 | | 1/3x-41/4x-6 | | -20=p/10 | | 7w=8w+6 | | 7-5q=-6q | | 25x-15=25x-15 | | n/3csd | | 4x+(-28)=2x+16 | | -3x+4=12x+34 | | 8-2v=-v |