k+3=7k+15

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Solution for k+3=7k+15 equation:


Simplifying
k + 3 = 7k + 15

Reorder the terms:
3 + k = 7k + 15

Reorder the terms:
3 + k = 15 + 7k

Solving
3 + k = 15 + 7k

Solving for variable 'k'.

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

Add '-7k' to each side of the equation.
3 + k + -7k = 15 + 7k + -7k

Combine like terms: k + -7k = -6k
3 + -6k = 15 + 7k + -7k

Combine like terms: 7k + -7k = 0
3 + -6k = 15 + 0
3 + -6k = 15

Add '-3' to each side of the equation.
3 + -3 + -6k = 15 + -3

Combine like terms: 3 + -3 = 0
0 + -6k = 15 + -3
-6k = 15 + -3

Combine like terms: 15 + -3 = 12
-6k = 12

Divide each side by '-6'.
k = -2

Simplifying
k = -2

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