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-k+ 3k Combining like terms and distributing
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-k+ 3k
Combining like terms and distributing

User Rajasankar
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2k Is the answer bc k becomes -k multiply k and 3 multiply k and 1, the k just gets copied along the answer is k then 3*k evaluates to 3k -k+3*k evaluates to 2k
User Gregory Seront
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