Grade 7 Math Module 7
7. Patterns7.1 Variables in Expressions
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Book Linkshttps://drive.google.com/open?id=0BysbuUrhVBOjfkhzWWQ5VVJxNWdZX3kxQ0dlZGJnX0lvdGt0Q0ZpY0dMcXVCTmZCeUItV3c
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