21-3n=15

Simple and best practice solution for 21-3n=15 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 21-3n=15 equation: 


Simplifying
21 + -3n = 15

Solving
21 + -3n = 15

Solving for variable 'n'.

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

Add '-21' to each side of the equation.
21 + -21 + -3n = 15 + -21

Combine like terms: 21 + -21 = 0
0 + -3n = 15 + -21
-3n = 15 + -21

Combine like terms: 15 + -21 = -6
-3n = -6

Divide each side by '-3'.
n = 2

Simplifying
n = 2

See similar equations:

| x^2+8uv+12v^2=1 | | 9y^5(y^4-8y)+6y^9= | | x^2+8uv+12v^2=0 | | 25-x/2=x/3 | | 6x^5/2x^3 | | m^2+13mn+40n^2=0 | | 1/2=q/5 | | u^2+8uv+12v^2=0 | | -2-5x=-3(x-4) | | 4(-10-4x)=-56 | | 2/1=5/q | | 132-4x=5x | | 5/9(9+w)=-10 | | 7x-5y=-15 | | 16w+14w= | | 43/8+61/2+32/3 | | 2h-210=634 | | -2/3=12 | | 4(x+6)+(3+4Y)=24 | | 144000000/1.17 | | 7(m-7)=-3m-39 | | 1/15+4/25+2/3 | | 29d+89=640 | | 4(v+2)-v=2(v-1)+9 | | 31=-6x+4x+7 | | 7/10-4/10 | | 11x-23=7x | | 5x+11y=106 | | 5x+11y=106(14) | | 3/9+2/9 | | 5x+11y= | | -93=31y |

Equations solver categories