verify, that a+(b+c)=(a+b)+c by taking a=-4/5,b=7/8,c=3/4
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Answer:
a+(b+c)=(a+b)+c
Step-by-step explanation:
a+(b+c)=_4/5+(7/8+3/4)
=_4/5+(7+6/8)
=_4/5+13/8
= 33/40
(a+b)+c =(_4/5+7/8)+3/4
=(_32+35/40)+3/4
=3/40+3/4
=3+30/40
=33/40
a+(b+c)=(a+b)+c
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