20=-30+k

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Solution for 20=-30+k equation:


Simplifying
20 = -30 + k

Solving
20 = -30 + 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.
20 + -1k = -30 + k + -1k

Combine like terms: k + -1k = 0
20 + -1k = -30 + 0
20 + -1k = -30

Add '-20' to each side of the equation.
20 + -20 + -1k = -30 + -20

Combine like terms: 20 + -20 = 0
0 + -1k = -30 + -20
-1k = -30 + -20

Combine like terms: -30 + -20 = -50
-1k = -50

Divide each side by '-1'.
k = 50

Simplifying
k = 50

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