15k+15=20k-20

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Solution for 15k+15=20k-20 equation:


Simplifying
15k + 15 = 20k + -20

Reorder the terms:
15 + 15k = 20k + -20

Reorder the terms:
15 + 15k = -20 + 20k

Solving
15 + 15k = -20 + 20k

Solving for variable 'k'.

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

Add '-20k' to each side of the equation.
15 + 15k + -20k = -20 + 20k + -20k

Combine like terms: 15k + -20k = -5k
15 + -5k = -20 + 20k + -20k

Combine like terms: 20k + -20k = 0
15 + -5k = -20 + 0
15 + -5k = -20

Add '-15' to each side of the equation.
15 + -15 + -5k = -20 + -15

Combine like terms: 15 + -15 = 0
0 + -5k = -20 + -15
-5k = -20 + -15

Combine like terms: -20 + -15 = -35
-5k = -35

Divide each side by '-5'.
k = 7

Simplifying
k = 7

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