If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3n+12=0
We move all terms containing n to the left, all other terms to the right
3n=-12
n=-12/3
n=-4
| x/4+2x=45 | | 5x+3=×+11 | | 3/4x-3/2=-5/6x+2/3 | | 3x-2/2x-3=-1/2 | | 9(8x-9)=24 | | 2(x+2)+5(x+5)=4(x-8)+3(x-2) | | 5x^2-2=11 | | x+x/3=148 | | 5(2z-1)-2(z+8)=2(z+1 | | 25=7+35x-16x^2 | | 6x-9-2(x+1)=x-9 | | 3nn=7 | | -8(t-9)-(t+3)=10 | | 21x+12=445 | | 1x+12=77 | | 9+3=12+(v-8)/2 | | a÷5=8=9 | | 6x^2-7=-3 | | 2x(2)+9x-5=0 | | 2/3x=834 | | 7p+5=19 | | 3x-15=25+x | | 5x–10=3x+2 | | 16+2689√12.5=x | | 6.25x^2-16x-100=0 | | Z=5x1+2x2 | | a^2+10a+12=-9 | | 49x^2-99x+49=0 | | x^2+11x-50.5=0 | | 9v+9-8v=43 | | 3m^2+5m+2=0 | | 6(x-9)=3x+9 |