21+(-12)=n

Simple and best practice solution for 21+(-12)=n equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 21+(-12)=n equation: 



21+(-12)=n

We move all terms to the left:

21+(-12)-(n)=0

We add all the numbers together, and all the variables

-1n+9=0

We move all terms containing n to the left, all other terms to the right

-n=-9

n=-9/-1

n=+9

See similar equations:

| x^2-10x+50=16 | | 16−2t=​3/2​​t+9 | | 400=16t^2+32t+384 | | 7(y-8)=21 | | 6-9x/10=-12 | | 4y+12=6y+12= | | e0=1 | | e0=+ | | 3x-15=3x-15 | | 7n5=n | | 131/3-51/2=x | | 119​​=n+​9​​7​​ | | x=3+3+3x15 | | 4.75+3/4=x | | 8x(6x-7)=10X(-2x+3) | | 6+-7x+x3=0 | | .2(x+50)-6=0.4 | | 4(-2b+6)+2=-30 | | 3x2+24x=27 | | 4x/5+5=25 | | X²+3x+4=78 | | 100x+25-45x=60x+70 | | 17+5x=34 | | 7x-(5x+3)=5(x-3+2 | | 2/5h+1/5h=-18/5 | | 2.1(a-3.7)=-13.86 | | t/6+6=7.5 | | -36.6=-3.9a+6.3 | | -7(x+11)=7 | | 3(b+9)=15 | | 45-72=n | | -7+11r=191 |

Equations solver categories