9-4n=21

Simple and best practice solution for 9-4n=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 9-4n=21 equation: 


Simplifying
9 + -4n = 21

Solving
9 + -4n = 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 + -4n = 21 + -9

Combine like terms: 9 + -9 = 0
0 + -4n = 21 + -9
-4n = 21 + -9

Combine like terms: 21 + -9 = 12
-4n = 12

Divide each side by '-4'.
n = -3

Simplifying
n = -3

See similar equations:

| -9-2=4x+4-3x | | 7x-21-8x+12=-2 | | -6x-20=4x-60 | | 2[3x-6]=24 | | 9y-7y-12=23.56 | | 33=7(2p-1)-2 | | -2x+62=903 | | 9+3k=k-9 | | [3b+9]-16=5 | | -9-2=4x | | 2x+2y=2x+y | | [4x-12]=12 | | 3-4n+2n=45-80 | | 118000=q*80000*9.5*365 | | 8x+2=14x-34 | | (243x^5)(y^2)-(3x)(y^2)=0 | | 2x+9=44 | | 3(36-8y)+4y=8 | | 2x+3=44 | | 7x-2(3x+4)=18-x | | u^2+19u+18= | | [-4g-2]=10 | | -9.5-6.4= | | 38=5x-2 | | [2k+3]=7 | | 6x+3=12x+15 | | 5y-12=3x | | 6+z=2 | | 13+6x=49 | | [c-10]=3 | | x^2+13+22= | | -4x=-2x+16 |

Equations solver categories