3n+9=-21

Simple and best practice solution for 3n+9=-21 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+9=-21 equation: 


Simplifying
3n + 9 = -21

Reorder the terms:
9 + 3n = -21

Solving
9 + 3n = -21

Solving for variable 'n'.

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

Add '-9' to each side of the equation.
9 + -9 + 3n = -21 + -9

Combine like terms: 9 + -9 = 0
0 + 3n = -21 + -9
3n = -21 + -9

Combine like terms: -21 + -9 = -30
3n = -30

Divide each side by '3'.
n = -10

Simplifying
n = -10

See similar equations:

| 5x+20+4=-1 | | 5y+x=87 | | 0.25x+5.9=35.9 | | 3x-12+2=-19 | | $499-1/2 | | 87-5y=99 | | 3x+-1x= | | (2x-1)(2x-1)+7=21 | | 3(x+3)-2x=-6 | | x^2+9x=640 | | 5x+5+6-2x=180 | | 5x*5x=225 | | 3x+x-728=0 | | 6-4x=4x-2 | | (y/6)-3=-11 | | -20x+20x= | | 3/x=12/15 | | 6x+4=(7) | | 15m=50 | | n+64=72 | | 4-6x=2x-4 | | 27x-32x= | | 55+-2y+y=40 | | 4x+-6x= | | 2x+5+6x-17=4 | | 12÷1/3 | | -16x+4y=44 | | 16x+8y=48 | | 8x+x^2+96=180 | | 13=(w-14)/4 | | 7-4x=4x-17 | | 3x-x+4=-2x-8 |

Equations solver categories