3(2n-1)=21

Simple and best practice solution for 3(2n-1)=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(2n-1)=21 equation: 


Simplifying
3(2n + -1) = 21

Reorder the terms:
3(-1 + 2n) = 21
(-1 * 3 + 2n * 3) = 21
(-3 + 6n) = 21

Solving
-3 + 6n = 21

Solving for variable 'n'.

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

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

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

Combine like terms: 21 + 3 = 24
6n = 24

Divide each side by '6'.
n = 4

Simplifying
n = 4

See similar equations:

| 5(x-3)+6=5x-9 | | 8+5.6x-1.2x^2=0 | | 2x(x-9)-3=-3(-7x+3)-9x | | y+4=-1/3(x-3) | | 80=.189x+70.9 | | -4y+10-2=-24 | | 3(x+5)=2(3x+12) | | 7x-13=3x+15 | | 2(x-9)-3=-3(-7x+3)-9x | | 6(y-1)=4y-14 | | 3/4x-4=7+1/2 | | -8x+44=2(x-3) | | -5(2x-9)=2(x-8)-11 | | 0.4(x+1)-5=3x-2 | | a[a-x]+b[b+x]=2ab | | (7x+13)/(6x+7)=20 | | 4-(3/w-2)=(5/w-1) | | 6y-13y+5= | | 2.85y-y=12.85y-2 | | 5u-7=-22 | | y^4-625=x^2 | | 9+-4b=17 | | -3y+10=-2 | | 44=-4+4 | | -8=-(z+4) | | -8x-1=63 | | x^2+0x+49=0 | | b+5b=19 | | 5x+4(2x+7)=93 | | 15y-12=8y+2 | | 14+5x=3(-x+3)-11 | | 15+5x=3(-x+3)-11 |

Equations solver categories