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Byju's Answer
Standard VII
Mathematics
Finding the Value of an Expression
Factorise:i 7...
Question
Factorise:
(i) 7m + 21n
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Solution
7m + 21n
7m =
7
× m
21n = 3 ×
7
× n
Here, 7 is the common factor of the given terms.
Hence, 7m + 21n = 7 (m + 3 × n)
= 7 (m + 3n)
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