Question

Are

(11 + 7) +10 and 11+(7+10) equal ?
Mention the
property.
​

Answer 1

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$by \: commutative \: property \\ a + (b + c) = (a + b) + c \\ proof = \\ (11 + 7) + 10 = 11 + (7 + 10) \\ (18) + 10 = 11 + (17) \\ 28 = 28 \\ hence \: proved$