12n+15=6n-21

Simple and best practice solution for 12n+15=6n-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 12n+15=6n-21 equation:


Simplifying
12n + 15 = 6n + -21

Reorder the terms:
15 + 12n = 6n + -21

Reorder the terms:
15 + 12n = -21 + 6n

Solving
15 + 12n = -21 + 6n

Solving for variable 'n'.

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

Add '-6n' to each side of the equation.
15 + 12n + -6n = -21 + 6n + -6n

Combine like terms: 12n + -6n = 6n
15 + 6n = -21 + 6n + -6n

Combine like terms: 6n + -6n = 0
15 + 6n = -21 + 0
15 + 6n = -21

Add '-15' to each side of the equation.
15 + -15 + 6n = -21 + -15

Combine like terms: 15 + -15 = 0
0 + 6n = -21 + -15
6n = -21 + -15

Combine like terms: -21 + -15 = -36
6n = -36

Divide each side by '6'.
n = -6

Simplifying
n = -6

See similar equations:

| -1.5x^2+3x-127.5=0 | | y=180(4x-2) | | b=5h+10 | | 2(4y-6)+5y=9 | | (a/6)+(6/8)=(8a/9)+(9/2) | | 4x+5-x+8=46 | | -63-10x=141+2x | | -7(1-4a)-7a=161 | | 3(x-4)+2x=3x-20 | | 18=-z-6+5z-12 | | y=180(4-2) | | 15x-5=25 | | -1s-1=8-2s | | 16-6b=2b+4(1-4)b | | 5(y-1)=36 | | (2x+3)(2x+5)=0 | | (6x-2)(x+1)=0 | | 2(4y+6)+5y=9 | | 8-4x=1/4(8x-16) | | -45n(4n+3)=15n(10n-17) | | x^2-6x-29=0 | | 3x-7-5(2x+1)=-x+(6x+24) | | 5x-(2x+8)=4x-12 | | 2+3=3x+2 | | 20f(8f-15)=3(4f-5) | | -78y-78=y-22 | | y=180(3-2) | | 2(4y-8)=8 | | 3x-12=wx+4 | | 5x+57=3x+67 | | x-137=-8x+88 | | 2x^2-10*x= |

Equations solver categories