10k+9=20

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Solution for 10k+9=20 equation: 


Simplifying
10k + 9 = 20

Reorder the terms:
9 + 10k = 20

Solving
9 + 10k = 20

Solving for variable 'k'.

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

Add '-9' to each side of the equation.
9 + -9 + 10k = 20 + -9

Combine like terms: 9 + -9 = 0
0 + 10k = 20 + -9
10k = 20 + -9

Combine like terms: 20 + -9 = 11
10k = 11

Divide each side by '10'.
k = 1.1

Simplifying
k = 1.1

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