Question

guys please help me:
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Answer 1

Answer:

(a+b)^-1 (a^-1+b^-1)=(ab)^-1

lhs

(a+b)^-1 (a^-1+b^-1)

1/(a+b)×(1/(a + 1/b)

1/(a+b)×(a+b)/abbey

1/ab

(ab)^-1

=rhs

hence proved

hope it will help you kindly mark the answer as brainlist.