If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3^(n+2)=18
We move all terms to the left:
3^(n+2)-(18)=0
We move all terms containing n to the left, all other terms to the right
3^(n+2)=18
| 4x+9=-7x31 | | -6+3u=21 | | P^2-5p+31=0 | | 3^n+2=18 | | 77=4u+9 | | -2/5x=4/9 | | 9(5+h)=108 | | 7(2x+18)=126 | | 14-2g=68 | | 3x+4+7x=180 | | 25*0.13x=20.32 | | 25h*14=0 | | 3x+4x+7x=180 | | 8x-5+4x=7 | | 32+3k=26 | | 34-4x=2(x-5) | | 8u+12=u+26 | | 2(3y-6=24) | | 6h+4=2h+24 | | (2y+10)+(5y-50)=360 | | -42-6m=12 | | X+y=23.×-y=7 | | 10x+9x-3x=16x | | .6666(n+18)=42.6666 | | 5f+6=2f+18 | | -131=5(3x-8)+6x- | | 3m+30=m+40 | | 12x+4-x=1+3x-3 | | 9(z-3)=-3 | | 2(y-4)=40 | | 9x+x-3=7-5x | | c+c+c+c+10=c+c+c+20 |