If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3+8n-4=39
We move all terms to the left:
3+8n-4-(39)=0
We add all the numbers together, and all the variables
8n-40=0
We move all terms containing n to the left, all other terms to the right
8n=40
n=40/8
n=5
| 5x+2+118=180 | | 20x-16x-9=39 | | 9.2c+5.514=158.234 | | 5x2/3=10/3x1/3 | | -31.9+n=-33 | | 3x+5=6x32 | | 6n+2n=7n-6 | | S=4+3d | | 7x-3=-7+4+7x | | 2a+3(3a-5)=84 | | 3w+2w-5=55 | | X/6/7=x/140 | | -3x+7x+14+5x=32 | | 6(a+3)+1=37 | | x+6=2x–8,x= | | 6x+5=82 | | 8(3x+2)-10x=44 | | 62x+x=0 | | -6x=3x-18 | | 180+76.5+x=360 | | 3h+5=19 | | 180+76.5+x=180 | | 40,000=3.14r^2 | | 9x+7=5x-65 | | 5.3a-4.8=25.94 | | k^2=-10-7k | | 3(2x+4)=-5 | | 12x+7=8x-29 | | 7(x+1)=3(x+5 | | 2x+139=180 | | X=65x+55 | | 3x/10=42 |