3(2n-1)-2n=21

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


Simplifying
3(2n + -1) + -2n = 21

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

Combine like terms: 6n + -2n = 4n
-3 + 4n = 21

Solving
-3 + 4n = 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 + 4n = 21 + 3

Combine like terms: -3 + 3 = 0
0 + 4n = 21 + 3
4n = 21 + 3

Combine like terms: 21 + 3 = 24
4n = 24

Divide each side by '4'.
n = 6

Simplifying
n = 6

See similar equations:

| 4=q+13 | | 9h-36-7b=15h-10 | | 12n+8-5n=42 | | 24t^2-36t=0 | | 6=x^2+2 | | 46+5n=12n+4 | | 2(x+5)(x+1)=0 | | 2x^2+5x-18=0 | | 4x^2+11x=20 | | 2(x-5)(x+1)=0 | | (x-2)5-2+((9-8x)3+(5x-12))=30x+12 | | 9(n+5)+6(n+3)= | | 2s+18=32 | | 0=6x-x^2 | | 2t-14t+3=3 | | 4(5+3b)= | | 4x^2+34x+60=0 | | 8(x-7(x-3))-(4x-8)+13+19=0 | | -6a+3=-3.6(a-1) | | (3t-r)(3t+r)=17 | | n^2+5n+7=7 | | (9-6x)-(4-3x)= | | 9(n+5)= | | x^2-2x=10 | | 4g-18=30 | | y+6=33 | | 8(x-7(x-3))-(4c-8)+13+19=0 | | 3ax+6=a^2x+2a | | 5d+19=79 | | p-32=4(18)-7 | | 17p=102 | | p-32=3(18)-7 |

Equations solver categories