7(k+3)=15-3(12-k)

Simple and best practice solution for 7(k+3)=15-3(12-k) 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 7(k+3)=15-3(12-k) equation:


Simplifying
7(k + 3) = 15 + -3(12 + -1k)

Reorder the terms:
7(3 + k) = 15 + -3(12 + -1k)
(3 * 7 + k * 7) = 15 + -3(12 + -1k)
(21 + 7k) = 15 + -3(12 + -1k)
21 + 7k = 15 + (12 * -3 + -1k * -3)
21 + 7k = 15 + (-36 + 3k)

Combine like terms: 15 + -36 = -21
21 + 7k = -21 + 3k

Solving
21 + 7k = -21 + 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 + 7k + -3k = -21 + 3k + -3k

Combine like terms: 7k + -3k = 4k
21 + 4k = -21 + 3k + -3k

Combine like terms: 3k + -3k = 0
21 + 4k = -21 + 0
21 + 4k = -21

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

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

Combine like terms: -21 + -21 = -42
4k = -42

Divide each side by '4'.
k = -10.5

Simplifying
k = -10.5

See similar equations:

| 8b-1=24b+4 | | 6/27/12/35 | | 5o=p | | 2xy+10x+y=3xy+21y-8x-56 | | -3n=9 | | 10=x+2x+10 | | 5/8(16) | | [v]=0.7 | | 92=2x+6x+4 | | 3x^2-x-70=0 | | 3.5x-12=2x+4 | | -11x^2+4x+18=0 | | f(x)=7x | | (4.7*10^-3)/(9.4*10^3) | | 4(90-x)+10=180-x | | -12x+5(-9x-6)=7(-8x-5) | | n-6=-3 | | 2x+10-9=11-3x | | 3f+7=46 | | -6y+12=-2(y+2) | | 2z-7=2z-2 | | 0=6log(x)+7 | | -2t+8=53 | | n(3n-8)=0 | | 7x+3=5x-4 | | 1/5(25+5x)=21-3(x+4) | | 9-3x+x=x-15 | | 5a/7-18=43 | | 3m+10=75 | | 12+6x-10x-18+2x-4x= | | D*159=309 | | v=9(32)/3 |

Equations solver categories