If it's not what You are looking for type in the equation solver your own equation and let us solve it.
12n=-9
We move all terms to the left:
12n-(-9)=0
We add all the numbers together, and all the variables
12n+9=0
We move all terms containing n to the left, all other terms to the right
12n=-9
n=-9/12
n=-3/4
| 81=6k | | 7y÷3+11=9y+15 | | 5{x}-8=7{x}-16 | | 7y+11=9y+15 | | 714*0.625=x | | 714/0.625=x | | x*0.7=500 | | 15x-25=6x+6 | | x(x+20)=-800 | | 5p-7÷3p+5=2 | | z÷10-2=1 | | 5(y+4)=2(3y+7)-5 | | 4+p/6=10 | | 3a+5=7a- | | 2b-8=10-2b | | 51/21=d/35 | | Y-9=5y-9 | | 4+a/2=-2 | | 5(3-y)=27 | | 1/b=7/35 | | 2{3x-1}-5x=5-{3x+11} | | 4(x-20)-(2x+15)=33 | | 7x–2=3x+10 | | 4x+-3=-26 | | 130°+150°+2d=360° | | 9e-5=2e+23 | | 17h-15=48 | | 2c+3-c-6=3c+12-2c+6 | | 25-9x²=0 | | 12a+5=4a+60 | | 2x-5+2(x-7)=1533 | | 12a-5=2a+45 |