3(n-4)=21

Simple and best practice solution for 3(n-4)=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(n-4)=21 equation: 


Simplifying
3(n + -4) = 21

Reorder the terms:
3(-4 + n) = 21
(-4 * 3 + n * 3) = 21
(-12 + 3n) = 21

Solving
-12 + 3n = 21

Solving for variable 'n'.

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

Add '12' to each side of the equation.
-12 + 12 + 3n = 21 + 12

Combine like terms: -12 + 12 = 0
0 + 3n = 21 + 12
3n = 21 + 12

Combine like terms: 21 + 12 = 33
3n = 33

Divide each side by '3'.
n = 11

Simplifying
n = 11

See similar equations:

| X+73+(X-44)=180 | | D^3y-6D^2y+11Dy-6y=0 | | -4y-7(4y-9)=2-3(-3-y) | | 19.00x+1.50=15.00x+2.27 | | 2(n-4)=21 | | -y-7(4y-9)=2-3(-3-y) | | 8x-28= | | -3x^4+27x+1200=0 | | 2x+10+x+20=90 | | 3X-2X+X+3=O | | 5x+6x-2x-5=4 | | .25f=10 | | X^2x=56 | | w-15=24 | | 4r+7=15 | | x+.02=520.88 | | 2p^5=64 | | 16=3x+2*x | | Lne^9+ln^4=0 | | .5x-.2x=3.4 | | .5x-.2x= | | 25=x^2+5*x | | 20=2x+3*x | | 90=18z | | 22222+33333+x=1555 | | 52(t+4)=48(t-4) | | 5*5*5+x=500 | | 7r-s+t=-13 | | 14x=2.7x+54000 | | 10(2x+3(x)-4)+x(3+5)=-25 | | 2x=.5x-27 | | 2x^2-29+104=0 |

Equations solver categories