7k+21=-7(5k-3)

Simple and best practice solution for 7k+21=-7(5k-3) 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 7k+21=-7(5k-3) equation:


Simplifying
7k + 21 = -7(5k + -3)

Reorder the terms:
21 + 7k = -7(5k + -3)

Reorder the terms:
21 + 7k = -7(-3 + 5k)
21 + 7k = (-3 * -7 + 5k * -7)
21 + 7k = (21 + -35k)

Add '-21' to each side of the equation.
21 + -21 + 7k = 21 + -21 + -35k

Combine like terms: 21 + -21 = 0
0 + 7k = 21 + -21 + -35k
7k = 21 + -21 + -35k

Combine like terms: 21 + -21 = 0
7k = 0 + -35k
7k = -35k

Solving
7k = -35k

Solving for variable 'k'.

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

Add '35k' to each side of the equation.
7k + 35k = -35k + 35k

Combine like terms: 7k + 35k = 42k
42k = -35k + 35k

Combine like terms: -35k + 35k = 0
42k = 0

Divide each side by '42'.
k = 0

Simplifying
k = 0

See similar equations:

| -x+7y=-7 | | 72.48+6x=18.08x | | -(3b-15)=6(2b+30) | | 8x=111 | | 3x+8=5x-12 | | 7(x-2)-(7+5x)=x | | 13y+8x+7=180 | | -5x+4y=-20 | | 3x^2+19x-6=0 | | 4(z-4)+8z-1= | | -2(x+4)-(8x-8)=-11x | | 11x^4+90x^3y+16x^2y^2+(12x-13y)(11x^2y+90xy^2+16y^2)=0 | | 13x-5=3x-45 | | x/15=75 | | 5(n-4)=5(7n+8) | | 4(m+7)-2(5m+1)=-7(m+1)+4 | | -4(x+5)+12=16 | | 2x+5=8x-1 | | (3h-6)(2h-8)=0 | | (9m+10)2m= | | -3h=-16 | | 0.08(y-5)+0.16y=0.04y-0.09(20) | | -5x+8y=40 | | 0.75x+17=-13 | | 2nx=p-mx | | y-8=14 | | 6x-5y=10findy | | x+1.5x=225 | | 5x+5-15x+3=10x-4-3x+11 | | 1036x-x^2=164 | | d+6=19 | | -5(6.5+3t)=3(0.9-t) |

Equations solver categories