1-7k=3(k+7)

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Solution for 1-7k=3(k+7) equation:


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

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

Solving
1 + -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.
1 + -7k + -3k = 21 + 3k + -3k

Combine like terms: -7k + -3k = -10k
1 + -10k = 21 + 3k + -3k

Combine like terms: 3k + -3k = 0
1 + -10k = 21 + 0
1 + -10k = 21

Add '-1' to each side of the equation.
1 + -1 + -10k = 21 + -1

Combine like terms: 1 + -1 = 0
0 + -10k = 21 + -1
-10k = 21 + -1

Combine like terms: 21 + -1 = 20
-10k = 20

Divide each side by '-10'.
k = -2

Simplifying
k = -2

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