1.

1/(1/3 %2B 1/2) %2B 1/(1/8 %2B 1/6)

Answer»

(6^-1 + 8^-1)^-1 + (3^-1 + 2^-1)^-1

= (1/6 + 1/8)^-1 + (1/3 + 1/2)^-1

= [(4 + 3)/24]^-1 + [(2 + 3)/6]^-1

= 24/7 + 6/5

= (24*5 + 6*7)/35

= (120 + 42)/35

= 162/35


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