42+7k=21

Simple and best practice solution for 42+7k=21 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 42+7k=21 equation: 


Simplifying
42 + 7k = 21

Solving
42 + 7k = 21

Solving for variable 'k'.

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

Add '-42' to each side of the equation.
42 + -42 + 7k = 21 + -42

Combine like terms: 42 + -42 = 0
0 + 7k = 21 + -42
7k = 21 + -42

Combine like terms: 21 + -42 = -21
7k = -21

Divide each side by '7'.
k = -3

Simplifying
k = -3

See similar equations:

| -3.28=2(1.5y-.5) | | x^2-36=-9 | | y=5x-40 | | (q+1)(2q-3)=3 | | 2x+4=3x-10 | | 9(h-84)-5=77 | | (7y)/(7y+7)+(7y-17)/(6y+6)=(6y+1)/(y+1) | | |36-7|=27 | | o/9+13=-3 | | 0/9+13=-3 | | 2/3v+1/6-7/9-5/6 | | 7y/(7y+7)+(7y-17)/(6y+6)=(6y+1)/(y+1) | | (31/5)y=31 | | 5N(N-1)=N+8 | | 12-9x=17-8x | | 31/5y=31 | | |x-5|+2=9 | | |x-5|-2=9 | | u/2-10=-80 | | 3b^2-b-1=0 | | h/2=-70 | | x+7/x+5 | | 4p^2-4p=0 | | -2.3a+16=-5a-38 | | 10x-27=7x+54 | | (14-y)=12 | | 2x+1=3x-8 | | 8(3x-5)=38 | | 3(6-d)=18 | | 1.2x+3.7=2.2-4.5 | | 6h-7=-73 | | -1r=6 |

Equations solver categories