If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
-18 = (1/3)*a-16 // - (1/3)*a-16
16-((1/3)*a)-18 = 0
(-1/3)*a-18+16 = 0
-1/3*a-2 = 0 // + 2
-1/3*a = 2 // : -1/3
a = 2/(-1/3)
a = -6
a = -6
| 219+x=540 | | -5=mx+b | | X-2/3=5/12 | | (27x^6-12x^5)/(3x^2) | | 7x=567 | | -7(3x-4)-(2x-3)=15x-(-4x+20) | | 14x=476 | | 2/7*49 | | Y=m(-5)+b | | 250-x=25 | | b=(4*a)-3 | | 4xy=64 | | PX+387=628 | | 9q+8=-4 | | 325*225= | | 2x+y=5y-4x | | C/20-41 | | X-189=165 | | -35x=-21 | | 6e^2x=42 | | -4m+3= | | N=10-3/8 | | 3(9x+12)+(-2x+5)= | | 4(y+3)-3=41 | | 5h-7= | | (8x/8.6y)-(4x/5.6y) | | 1132=x(167+19)+16 | | 9x=558 | | 3r(9+5)= | | 6.75+x=10.6 | | -33+84= | | y=-3.7x+3.3 |