9k+20=4k-25

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Solution for 9k+20=4k-25 equation:


Simplifying
9k + 20 = 4k + -25

Reorder the terms:
20 + 9k = 4k + -25

Reorder the terms:
20 + 9k = -25 + 4k

Solving
20 + 9k = -25 + 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.
20 + 9k + -4k = -25 + 4k + -4k

Combine like terms: 9k + -4k = 5k
20 + 5k = -25 + 4k + -4k

Combine like terms: 4k + -4k = 0
20 + 5k = -25 + 0
20 + 5k = -25

Add '-20' to each side of the equation.
20 + -20 + 5k = -25 + -20

Combine like terms: 20 + -20 = 0
0 + 5k = -25 + -20
5k = -25 + -20

Combine like terms: -25 + -20 = -45
5k = -45

Divide each side by '5'.
k = -9

Simplifying
k = -9

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