13k-13+20k+4=90

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Solution for 13k-13+20k+4=90 equation:


Simplifying
13k + -13 + 20k + 4 = 90

Reorder the terms:
-13 + 4 + 13k + 20k = 90

Combine like terms: -13 + 4 = -9
-9 + 13k + 20k = 90

Combine like terms: 13k + 20k = 33k
-9 + 33k = 90

Solving
-9 + 33k = 90

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 + 33k = 90 + 9

Combine like terms: -9 + 9 = 0
0 + 33k = 90 + 9
33k = 90 + 9

Combine like terms: 90 + 9 = 99
33k = 99

Divide each side by '33'.
k = 3

Simplifying
k = 3

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