3+2x=21

Simple and best practice solution for 3+2x=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+2x=21 equation:


Simplifying
3 + 2x = 21

Solving
3 + 2x = 21

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 2x = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 2x = 21 + -3
2x = 21 + -3

Combine like terms: 21 + -3 = 18
2x = 18

Divide each side by '2'.
x = 9

Simplifying
x = 9

See similar equations:

| 5x+9=54 | | 7x-13=356 | | 9p+20=-7 | | 22=-6f-8 | | -4.8=d-3.9 | | 2m+5=17 | | -7k+3=-11 | | 6n-7=11 | | 5x+7=27 | | 8+4g=-32 | | 172-5x=40x+22 | | 13-9x=85-23x | | -61-8x=9x+24 | | 2(3-2x)=(x-4) | | n-14=19 | | 4x+7=-17+8x | | 7n=42 | | 2x+58=7x+13 | | 8x+5=5x+23 | | n-9=10 | | 10x-17=73 | | 9x+9=63 | | 10n+4=104 | | 2x+45=6x+13 | | 3n-14=7 | | n*5=50 | | 6n+6=24 | | 2+2x=0 | | -2x+6=4(-6-8x) | | -14-6n=5-4n-3 | | a-6=-3+2a | | -4v+4v=6+v |

Equations solver categories