If it's not what You are looking for type in the equation solver your own equation and let us solve it.
N in (-oo:+oo)
N/6+3 = 12 // - 12
N/6-12+3 = 0
1/6*N-9 = 0 // + 9
1/6*N = 9 // : 1/6
N = 9/1/6
N = 54
N = 54
| 2X^2+5X=2X+9 | | 6(x+5)=7x+30 | | 8x+37=8x+13 | | (6z-12)+(5z+16)=180 | | z^2+4z+4+2i=0 | | 1+3(x-5)=7+x | | 0.6a=6 | | (6z-12)+(5z+16)=90 | | 7(x+7)=8x+40 | | 7x+3-5x+84x-1= | | 0.625=0.5r | | (6z+12)+(5z+16)=90 | | N^2-4N-5=0 | | W-4.58=1.78 | | 3/4(t-2)-2/5(2t-3)=3/5 | | 10x-4=8x+1 | | .03n=0.2 | | 4x-1+6x+11=120 | | 8(x+5)=4x+48 | | 8a-6+a-1= | | 8/1/5 | | 4=0.8q | | y=.333(-6) | | y=.333(6) | | 0.2t=9 | | y=.333(0) | | 9/5w=7/9 | | 8=0.6d | | (x/9)+(x/8)=17/72 | | 7x-2x+6=20+3x | | -x^2+3x-4=2 | | -3/7x=6 |