Question

If a=5, b=7and C=9,verify (a+b)+C=a+(b+c)?​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

(5+7)+9 = 5+(7+9)

12+9= 5+16

21 = 21

(a+b) + c= a+(b+c) proved

Step-by-step explanation:

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