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/3+1/4 = 13 // - 13
b/3+1/4-13 = 0
1/3*b-51/4 = 0 // + 51/4
1/3*b = 51/4 // : 1/3
b = 51/4/1/3
b = 153/4
b = 153/4
| -3(2x+9)=6x+9 | | .3h-4(.6h-3)=.6h-6 | | 9/8+5/6= | | p/0.3=1.5 | | 9(-7)(0)(-3)= | | 8x-4(x+3)=4(7x+1) | | a^2-a=12 | | -52+7x=-122 | | u^2+u-20/6u^2-96 | | -20w+5=5w+40 | | 2=x-13 | | (y/3.5)+15=17 | | 20=-12 | | 5x-5-(4x-4)=-7x-7 | | -5(3)(-1)(-1)= | | -53+9x=55 | | 9(h+3)-4h=-3 | | 7/2+2m/9=77/18 | | -(-b-6)=-1 | | a^4+36a^2=0 | | 102=6(2x+1) | | 7-9x-3x+5= | | 8-4+(-3)-12-6= | | -7-5(1-x)=-5+5x | | 8-4+-3-12-6= | | s+31/2s=27 | | 4x-6x+5=12x-20 | | 12(v+4)-3v=3(3v+3)-11 | | -4x+17=57 | | 3/4(b+2)=27/8 | | X^2+2+22=10x | | M+35=-72 |