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)
129.6 = 10.8*(1/3)*b // - 10.8*(1/3)*b
129.6-(10.8*(1/3)*b) = 0
129.6-3.6*b = 0
129.6-3.6*b = 0 // - 129.6
-3.6*b = -129.6 // : -3.6
b = -129.6/(-3.6)
b = 36
b = 36
| -49-5b= | | 6561=1/3*729*h | | 4-2(-2m+4)= | | 0.20x=0.14x | | -5(6+2r)= | | 6(c+4)=48 | | 243=1/3*81*h | | -2-b/3=-5/2 | | 0.12/x=14.08 | | X=4MN | | 16=3(3+x) | | X=AMN | | 4-2(-m+4)= | | (2x+18)(2x+14)=396 | | 0.12x=14.08 | | 3.5x+90=132 | | (Y+3)(y+4)= | | 8(2w-6)+5(w+7)=-97 | | -(4x-3)(5x-2)= | | 6(3d-1)-2d=2(2d-5)-8 | | 5x^7=8 | | 1/4y+9-5/4y-2= | | 2x+11+12=180 | | 5-=y/6=1 | | 4h^2-39h-10=0 | | -(-9x-9y-9)= | | -3d+8d-9+6= | | 471-862=y | | Bx-3b=ax+7b | | 4(x-8)+6x=0 | | 3x+24=57+9 | | 18=6x+4 |