-21+k=k-2k

Simple and best practice solution for -21+k=k-2k 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+k=k-2k equation:


Simplifying
-21 + k = k + -2k

Combine like terms: k + -2k = -1k
-21 + k = -1k

Solving
-21 + k = -1k

Solving for variable 'k'.

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

Add 'k' to each side of the equation.
-21 + k + k = -1k + k

Combine like terms: k + k = 2k
-21 + 2k = -1k + k

Combine like terms: -1k + k = 0
-21 + 2k = 0

Add '21' to each side of the equation.
-21 + 21 + 2k = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 2k = 0 + 21
2k = 0 + 21

Combine like terms: 0 + 21 = 21
2k = 21

Divide each side by '2'.
k = 10.5

Simplifying
k = 10.5

See similar equations:

| 0.6-1.2x=5.4x-0.1 | | 3(m+6)=2(m-1) | | 2+3y-2y=14 | | 3(m+6)=2(m-6) | | 12*0.4+3(0.4-2)=0 | | x^2+10x+25-17=0 | | -75+16y+3=5(5y-5)-2 | | 5.5m-5.5m=-12 | | 5(x+4)=4(x+6) | | 15(3+x)= | | 17-2x=7x-11 | | 5x+4=9+3x | | 67=3(2n+7)-2 | | 4y=42-3y | | 21x+16=17x+26 | | 4x-3=4(x-5) | | -2y-18=5y+17 | | 5x-20y=30 | | -6/5(1+y)+y=-13/5 | | 9x^7/15x | | -7-5(8n-8)=193 | | 3x=3+3y | | 3x-4=7x-1-3x | | -77=-7(-5x-4) | | 20x-5=40x-3 | | 32x+4=68 | | -3(z+4)=8-2z | | 18+7c=32-3c | | -65=-5(1-4x) | | 7x-3+2x=9x-8x-17 | | -6x^2+6x-2=0 | | 7+x^2+8x=0 |

Equations solver categories