129=84+K

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Solution for 129=84+K equation:


Simplifying
129 = 84 + K

Solving
129 = 84 + K

Solving for variable 'K'.

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

Add '-1K' to each side of the equation.
129 + -1K = 84 + K + -1K

Combine like terms: K + -1K = 0
129 + -1K = 84 + 0
129 + -1K = 84

Add '-129' to each side of the equation.
129 + -129 + -1K = 84 + -129

Combine like terms: 129 + -129 = 0
0 + -1K = 84 + -129
-1K = 84 + -129

Combine like terms: 84 + -129 = -45
-1K = -45

Divide each side by '-1'.
K = 45

Simplifying
K = 45

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