40=20+k

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Solution for 40=20+k equation:


Simplifying
40 = 20 + k

Solving
40 = 20 + 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.
40 + -1k = 20 + k + -1k

Combine like terms: k + -1k = 0
40 + -1k = 20 + 0
40 + -1k = 20

Add '-40' to each side of the equation.
40 + -40 + -1k = 20 + -40

Combine like terms: 40 + -40 = 0
0 + -1k = 20 + -40
-1k = 20 + -40

Combine like terms: 20 + -40 = -20
-1k = -20

Divide each side by '-1'.
k = 20

Simplifying
k = 20

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