21=2n+5

Simple and best practice solution for 21=2n+5 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=2n+5 equation:


Simplifying
21 = 2n + 5

Reorder the terms:
21 = 5 + 2n

Solving
21 = 5 + 2n

Solving for variable 'n'.

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

Add '-2n' to each side of the equation.
21 + -2n = 5 + 2n + -2n

Combine like terms: 2n + -2n = 0
21 + -2n = 5 + 0
21 + -2n = 5

Add '-21' to each side of the equation.
21 + -21 + -2n = 5 + -21

Combine like terms: 21 + -21 = 0
0 + -2n = 5 + -21
-2n = 5 + -21

Combine like terms: 5 + -21 = -16
-2n = -16

Divide each side by '-2'.
n = 8

Simplifying
n = 8

See similar equations:

| 7w+3-11w=9-3w | | 2y+20+5x+40=180 | | 2(9+4)= | | 84=2q | | -6=3+y | | 10x+6y=5200 | | 9x^2-10x+4= | | z^2+14=63 | | 54=3f | | 3x+4y=9fory | | 10x+4+46=180 | | 4(6x+8)+7=1+5x | | -2(6-10m)=(2m-6) | | 5+19x=80 | | 46=3y-8 | | -16b=-256 | | 2y-x=36 | | http://dpts2.charterresources.us/itembank/FULLBANK_EN_2.1_96_PNG_G08MATH-7/images/mml3180581.png | | 4g=g^2+4 | | 6r+8-3r-3=11 | | 18x+8(932-x)=152 | | 2p-6=-4(-7p-2)-4(-2+6p) | | 6n-3n-5=-8(6+5n) | | 2(9c-1)+7(c+b)=-60 | | 4n^2+9n-3=0 | | 3x+3x+2x= | | 17=u+9 | | 3(4x+3)+4(6x)=43 | | (b-7)(b^2+7b-1)= | | 9-4[3(a+2)-2a]= | | 7ki^2-3k-1=0 | | -12-7=14y+4-13y |

Equations solver categories