7n-4-3=21

Simple and best practice solution for 7n-4-3=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 7n-4-3=21 equation: 


Simplifying
7n + -4 + -3 = 21

Reorder the terms:
-4 + -3 + 7n = 21

Combine like terms: -4 + -3 = -7
-7 + 7n = 21

Solving
-7 + 7n = 21

Solving for variable 'n'.

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

Add '7' to each side of the equation.
-7 + 7 + 7n = 21 + 7

Combine like terms: -7 + 7 = 0
0 + 7n = 21 + 7
7n = 21 + 7

Combine like terms: 21 + 7 = 28
7n = 28

Divide each side by '7'.
n = 4

Simplifying
n = 4

See similar equations:

| s-3=1 | | 6+4q=7q | | 2+6m=7m+9 | | 5+9r=10r | | x^6-2x^2-35=0 | | 2v+7(v-6)=3 | | s-3= | | 8.4(35-d)+12.6=327.6 | | 6a-4t+2a+t= | | 5x-3(x-4)= | | -d=6-3d | | 13=7x+4-4x | | -18=3(y+3)-6y | | -9w=-5-10w | | -3(3n+2)=15 | | (1/x^2)+(4/x)-5=0 | | -33n+2=15 | | 5+3f=5f+9 | | -9v=-10-10v | | k/4+6=-12 | | 4(x-7)+5x=-19 | | 7-5a+4a=14 | | -9n=-8-10n | | 6+2g=4+4g | | 8z+10=2z+6+8z | | -3(x-1)+8(x+3)=6x+7-5x | | 2(x-8)= | | 4x-16-2x= | | 4+8z=10z+10 | | 2/5x+3=7 | | -9y=-10y+6 | | -10-5w-10=-8w+10 |

Equations solver categories