3n+9=5n-12-n

Simple and best practice solution for 3n+9=5n-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 3n+9=5n-12-n equation:


Simplifying
3n + 9 = 5n + -12 + -1n

Reorder the terms:
9 + 3n = 5n + -12 + -1n

Reorder the terms:
9 + 3n = -12 + 5n + -1n

Combine like terms: 5n + -1n = 4n
9 + 3n = -12 + 4n

Solving
9 + 3n = -12 + 4n

Solving for variable 'n'.

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

Add '-4n' to each side of the equation.
9 + 3n + -4n = -12 + 4n + -4n

Combine like terms: 3n + -4n = -1n
9 + -1n = -12 + 4n + -4n

Combine like terms: 4n + -4n = 0
9 + -1n = -12 + 0
9 + -1n = -12

Add '-9' to each side of the equation.
9 + -9 + -1n = -12 + -9

Combine like terms: 9 + -9 = 0
0 + -1n = -12 + -9
-1n = -12 + -9

Combine like terms: -12 + -9 = -21
-1n = -21

Divide each side by '-1'.
n = 21

Simplifying
n = 21

See similar equations:

| 64x^2-9=0 | | 4(x-1)=2x+10 | | 6n=126 | | 2=-8*n | | 2x-5x=-8 | | 12-7x=105-28x | | -7=7d-8 | | 2x+6x+8=32 | | 10x+4=6x+16 | | 2h+9=21 | | x(x-2)=36-2x | | -86-8x=9x+16 | | 4(x+4)=2(x+6) | | 2x+16=x+14 | | 4t-3=0 | | 7a-(a-8)=a+3 | | 3+5+g=-6 | | 13x+5=7x+29 | | 6x+6=-106-10x | | W*6=2*3 | | (2r+5)(3r^2-16r+t)=0 | | 3x^2=42 | | 15x-30=5x-50 | | 2w*3=-4 | | -22-6x=8-9x | | 4(x+18)=-2(x-12) | | 3Z(2Z+7)+12=0 | | 2.3+r=-4.9 | | 2a+7=15 | | 8(x-4)=4x+0 | | 10x+6=8x+8 | | 3x*4=-6 |

Equations solver categories