it depends on the other number you are dealing with most of the time it is 5 but don't take that as an answer like i said it matters on the other number your dealing with
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The GCF is n.
You need the associative and commutative properties, but not the distributive property. n*4n*9 =n*(4n*9) (associative) = n*(9*4n) (commutative) = n*(36n) (associative) = 36n*n commutative = 36*n^2
(4 x 7) + 5 = 33
4n = 48 4n/4 = 48/4 (Divide by 4 on both sides and then cancel) n = 12
3n + 4n = 42 7n = 42 n = 42/7 n = 6