1+8k+9k=10k-20

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Solution for 1+8k+9k=10k-20 equation:


Simplifying
1 + 8k + 9k = 10k + -20

Combine like terms: 8k + 9k = 17k
1 + 17k = 10k + -20

Reorder the terms:
1 + 17k = -20 + 10k

Solving
1 + 17k = -20 + 10k

Solving for variable 'k'.

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

Add '-10k' to each side of the equation.
1 + 17k + -10k = -20 + 10k + -10k

Combine like terms: 17k + -10k = 7k
1 + 7k = -20 + 10k + -10k

Combine like terms: 10k + -10k = 0
1 + 7k = -20 + 0
1 + 7k = -20

Add '-1' to each side of the equation.
1 + -1 + 7k = -20 + -1

Combine like terms: 1 + -1 = 0
0 + 7k = -20 + -1
7k = -20 + -1

Combine like terms: -20 + -1 = -21
7k = -21

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

Simplifying
k = -3

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