126+2k=168

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Solution for 126+2k=168 equation: 



126+2k=168

We move all terms to the left:

126+2k-(168)=0

We add all the numbers together, and all the variables

2k-42=0

We move all terms containing k to the left, all other terms to the right

2k=42

k=42/2

k=21

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