Question

verify the associative property of rational numbers under addition if a=4/5,b=-3/7 and c=5/21​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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

(4/5 +(-3/7))+5/21=4/5 +(-3/7)+5/21)

(28-15)/(35)+5/21=4/5+ (-9+5)/(21)

(13/35)+5/21=4/5+(-4/21)

(39+25)/105=(84-20)/105

64/105=64/105