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What is 7(n+3)-4n who knows i need help
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What is 7(n+3)-4n
who knows i need help

User Lanza
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7( n+3)-4n

=7n+21-4n

=7n-4n+21

=3n+21 you can leave it like this also but

=3(n+7) doing this is best

User Northpole
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