7+k=20

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Solution for 7+k=20 equation: 


Simplifying
7 + k = 20

Solving
7 + k = 20

Solving for variable 'k'.

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

Add '-7' to each side of the equation.
7 + -7 + k = 20 + -7

Combine like terms: 7 + -7 = 0
0 + k = 20 + -7
k = 20 + -7

Combine like terms: 20 + -7 = 13
k = 13

Simplifying
k = 13

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