12=n+2n-9

Simple and best practice solution for 12=n+2n-9 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 12=n+2n-9 equation:


Simplifying
12 = n + 2n + -9

Reorder the terms:
12 = -9 + n + 2n

Combine like terms: n + 2n = 3n
12 = -9 + 3n

Solving
12 = -9 + 3n

Solving for variable 'n'.

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

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

Combine like terms: 3n + -3n = 0
12 + -3n = -9 + 0
12 + -3n = -9

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

Combine like terms: 12 + -12 = 0
0 + -3n = -9 + -12
-3n = -9 + -12

Combine like terms: -9 + -12 = -21
-3n = -21

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

Simplifying
n = 7

See similar equations:

| An+7=19 | | 5+2x=4x+7 | | 4x+13=-47-8 | | x^5=500 | | 2.2=11x | | a+15= | | 6(n+6)=60 | | 2x+6=-14-2 | | 2(n+10)+3n=24 | | x+.06x=1.40 | | 9k+6=8k+16 | | 6b^3-13b+3=-3 | | -5(n-6)=-10 | | n+2.5n+1.5n=35 | | (X+3)+(2x-1)=10 | | -3(-5x+2)-8x=3(x-1)-9 | | (0.1+x)(0.05+x)=0 | | 10x+9x=10+x | | 2sec^2x+7tanx-6=0 | | 10y^2-12y+2=0 | | =.0002x^2-.316x+127.9 | | (x-6)(2x-6)=0 | | 40=5-2x | | 12x-10y=-3 | | 4(2+x)=3-(x-1) | | 5x+19y=3 | | (15b-6)-7(2b+4)=-2 | | sinx^5*cosx^2=(cosx^2-2*cosx^4+cosx^6)*sinx | | 7(u+8)=-6(2u-9)+3u | | -18m-9=87 | | 8x^2-3=28 | | 8x+1-9x=9-(x+4) |

Equations solver categories