2n+7=21+9n

Simple and best practice solution for 2n+7=21+9n 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 2n+7=21+9n equation:


Simplifying
2n + 7 = 21 + 9n

Reorder the terms:
7 + 2n = 21 + 9n

Solving
7 + 2n = 21 + 9n

Solving for variable 'n'.

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

Add '-9n' to each side of the equation.
7 + 2n + -9n = 21 + 9n + -9n

Combine like terms: 2n + -9n = -7n
7 + -7n = 21 + 9n + -9n

Combine like terms: 9n + -9n = 0
7 + -7n = 21 + 0
7 + -7n = 21

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 = 14
-7n = 14

Divide each side by '-7'.
n = -2

Simplifying
n = -2

See similar equations:

| 170+.25x=400 | | 21=-8x+3(x-8) | | 8b^2-16b+1=0 | | x-10x+18=-6 | | n+4-11=19 | | 9x^3+6x^2-5x-2=0 | | (4x^3)-(10x^2)-250=0 | | (2x-40)+60=4x-20 | | 4x^2-y^2=15 2x-y=5 | | 5x+9=5x+11 | | r-5=1-2r | | (12x^6-9x^4)/(3x^3) | | 3x^2+18x+4=0 | | 6x-=x | | 9a^2-18a-55=0 | | x^3-2x^2-6x+3=0 | | 7=23-44y | | 9z-5=10z+9 | | 100-50/5*10 | | 19d+7d+5d= | | 9z-5=10+9 | | 10x+21=3x+112 | | 8-5(y-6)=6+3y | | r^2-16r+9=0 | | (3x+5)65= | | 5m^2+32m+12=0 | | 1/2×29.16= | | 29.16×1/2= | | a-4=2-6a+4a | | x^3+6x^2-13x+42=0 | | 6p^2-8=-13p | | g+3g-5=-1 |

Equations solver categories