[3n+6]=21

Simple and best practice solution for [3n+6]=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+6]=21 equation: 


Simplifying
[3n + 6] = 21

Reorder the terms:
[6 + 3n] = 21

Remove brackets around [6 + 3n]
6 + 3n = 21

Solving
6 + 3n = 21

Solving for variable 'n'.

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

Add '-6' to each side of the equation.
6 + -6 + 3n = 21 + -6

Combine like terms: 6 + -6 = 0
0 + 3n = 21 + -6
3n = 21 + -6

Combine like terms: 21 + -6 = 15
3n = 15

Divide each side by '3'.
n = 5

Simplifying
n = 5

See similar equations:

| 8(v+2)-2v=2(3v+2)-9 | | 4x^2-9-1=0 | | 21-12=13 | | 3/11=-1x | | x^2+11x=-4 | | -70+6x=-3+56 | | mr=-0.2x+350 | | (4n+9)-(6n+12)=n | | 2x(9x^2+25x)=0 | | 100x/90 | | x^4+y^4=81 | | -9+x=-2+9 | | 5s-11=-25+3s | | 2x^2+kx+15=0 | | Dx+Gy=L | | (4a-10b)(6a+b)= | | (x^4y^9z^0/x^12y^-3)^-3 | | 15r-10r-r+2r+4r+1=11 | | 9s-22=-47+4s | | 1141458x+1706738y=893406754 | | -26+6x=2x+18 | | 8m-4=38+2m | | 12p+3=14 | | 5y-8=4y | | 2x^2-18x+81=0 | | 45-9=46- | | 9u+u-7u+4u-1=13 | | 3p+12=14 | | 650+30(n-10)=750+22(n-12) | | 24=2X+15 | | (6y-2)-4y=2 | | 292=47-y |

Equations solver categories