k-21+8k=3(k+1)

Simple and best practice solution for k-21+8k=3(k+1) 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 k-21+8k=3(k+1) equation:


Simplifying
k + -21 + 8k = 3(k + 1)

Reorder the terms:
-21 + k + 8k = 3(k + 1)

Combine like terms: k + 8k = 9k
-21 + 9k = 3(k + 1)

Reorder the terms:
-21 + 9k = 3(1 + k)
-21 + 9k = (1 * 3 + k * 3)
-21 + 9k = (3 + 3k)

Solving
-21 + 9k = 3 + 3k

Solving for variable 'k'.

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

Add '-3k' to each side of the equation.
-21 + 9k + -3k = 3 + 3k + -3k

Combine like terms: 9k + -3k = 6k
-21 + 6k = 3 + 3k + -3k

Combine like terms: 3k + -3k = 0
-21 + 6k = 3 + 0
-21 + 6k = 3

Add '21' to each side of the equation.
-21 + 21 + 6k = 3 + 21

Combine like terms: -21 + 21 = 0
0 + 6k = 3 + 21
6k = 3 + 21

Combine like terms: 3 + 21 = 24
6k = 24

Divide each side by '6'.
k = 4

Simplifying
k = 4

See similar equations:

| (3/11)2 | | 10-4(x+5)= | | C+15.3=-4.9 | | vp+12v+8p+96=0 | | u/19=28 | | -4.9b=58.8 | | -5b+6=21 | | -5.7a=45.6 | | 2x+(-3+-2x)=9 | | 13.4x=-134 | | x/(x-250)=1440/(1440-x) | | -29-11y+14=-21y+35+5y | | 3a+6b=54 | | M-6.1=-3.7 | | 3-(2x+1)=x+(6-4x) | | x+y=4y+60 | | 3a+6a=54 | | -x^3-3x^2-4x-2=0 | | 40=56t-16t^2 | | log(x/20)=1 | | -16.6-n=-4.8 | | 2x+(-2x+3)=9 | | x+y=4y-60 | | 4m-7=2p-1 | | -41-11y+12=-27y+6+9y | | 7x^8-567= | | M/2=8.9 | | 6x-20= | | H=-16t^2+40t+9 | | 9.1y=-54.6 | | 2x^6+8x^3+6= | | 10-4x-20= |

Equations solver categories