3(3+n)=21

Simple and best practice solution for 3(3+n)=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 3(3+n)=21 equation: 


Simplifying
3(3 + n) = 21
(3 * 3 + n * 3) = 21
(9 + 3n) = 21

Solving
9 + 3n = 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 + 3n = 21 + -9

Combine like terms: 9 + -9 = 0
0 + 3n = 21 + -9
3n = 21 + -9

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

Divide each side by '3'.
n = 4

Simplifying
n = 4

See similar equations:

| x-0.08x=8900 | | 5+3/4(n+9)=7/2 | | 82x=12 | | 7n-19=4n+41 | | 5(4+n)=55 | | 3s-13=14 | | 5y=-34 | | 3r+1=-11 | | (x-3)*(2x+3)=5 | | -3b+3=6 | | -3x+5x+8=4x+6+x-1 | | 17-(-5)=12 | | -5(4y-4)-y=-4(y-2) | | 2-b=3 | | 32-6x+7x=-7+28 | | -4(3+n)=-52 | | x+13-2=25 | | -8=-4(m-5) | | 2t^2-3t+2= | | 6=x(1.2)-12 | | -3x+4x-3=8x+4+3x | | 4x-1=x+10+5 | | F(x)=16+x^2+8x | | 3.4-0.88=1.36-2.2x | | -3(5+x)=-3 | | 3(x+9)+7x=10x-27 | | 0=4-2x-y | | -72=-20-2v | | Yk+yn=t | | 6r-1-5r=11 | | 0=-2x-y | | 5x+4=2x-1+5x |

Equations solver categories