3n+21=0

Simple and best practice solution for 3n+21=0 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 3n+21=0 equation: 


Simplifying
3n + 21 = 0

Reorder the terms:
21 + 3n = 0

Solving
21 + 3n = 0

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-21' to each side of the equation.
21 + -21 + 3n = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 3n = 0 + -21
3n = 0 + -21

Combine like terms: 0 + -21 = -21
3n = -21

Divide each side by '3'.
n = -7

Simplifying
n = -7

See similar equations:

| -r^2+11r-18= | | 14x-97=6x-12-9x | | -6=3-5x | | 3.14(7)2(40)= | | 3p+8p=132 | | 5x+3y+14=20 | | 5x^4-45=0 | | 16p-5=-17 | | 1.25+0.75=10.25 | | x+-9y=-48 | | -5=2/11z | | 14x-(7+5x)= | | 2x-3=5y-10 | | 6n+7=341 | | 13x-(9+5x)= | | (60-2x)x=0 | | -4(4h-5)=100 | | (6+10i)-(2-14i)= | | 5g-3+7g-2= | | xa+xb-c=0 | | 6x-2/5=2 | | 5x^2-3x=-10 | | 6x-2/5=5 | | 5x+9=5x-8 | | ef+8ef+10ef= | | (60-2x)x=60 | | ln(sqrt(x+4))=7 | | 2/3x=2-4/3 | | 16-2v=4 | | -2n+m=7 | | -2x+5+7x+2=5(x+2)-3 | | 4(w-3)=4w-12 |

Equations solver categories