3k=4k+21

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Solution for 3k=4k+21 equation: 


Simplifying
3k = 4k + 21

Reorder the terms:
3k = 21 + 4k

Solving
3k = 21 + 4k

Solving for variable 'k'.

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

Add '-4k' to each side of the equation.
3k + -4k = 21 + 4k + -4k

Combine like terms: 3k + -4k = -1k
-1k = 21 + 4k + -4k

Combine like terms: 4k + -4k = 0
-1k = 21 + 0
-1k = 21

Divide each side by '-1'.
k = -21

Simplifying
k = -21

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