21=4k-15

Simple and best practice solution for 21=4k-15 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=4k-15 equation:


Simplifying
21 = 4k + -15

Reorder the terms:
21 = -15 + 4k

Solving
21 = -15 + 4k

Solving for variable 'k'.

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

Add '-4k' to each side of the equation.
21 + -4k = -15 + 4k + -4k

Combine like terms: 4k + -4k = 0
21 + -4k = -15 + 0
21 + -4k = -15

Add '-21' to each side of the equation.
21 + -21 + -4k = -15 + -21

Combine like terms: 21 + -21 = 0
0 + -4k = -15 + -21
-4k = -15 + -21

Combine like terms: -15 + -21 = -36
-4k = -36

Divide each side by '-4'.
k = 9

Simplifying
k = 9

See similar equations:

| n=122/39 | | .5x+x=-x+25 | | .66n+6=.25n-3 | | 2x^2+8/5x-6 | | 10x-54=16 | | 4e+2r+10e= | | 5a+3b=2a+7b | | 32/5*b=11/5 | | 19+x+(2x)=40 | | 4+2x+4x-4=180 | | c=49+20 | | 1/3x+4=7 | | c-2+c= | | 5(x-3)-2=-5(-3x+4)-x | | -9x=10 | | 2/3y-6=-2 | | 1+2x-(x+1)=3x-6 | | y^2+10y+21= | | 10+x/4=3x/4 | | 5/11*121 | | 2a^2+36=18a | | -x+2y=17 | | -6x=-4-(x+1) | | x^3=3a^2x-2a^3 | | 10-6z+(8+7z)= | | 5/11*n=55 | | 30+156=105 | | 3.3x-5.5y-4.1=0 | | 3/5m+1/4=m-1/5 | | 6y+5x=225 | | 18+18+w+w=68 | | x+(x/2) |

Equations solver categories