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Find the values of frac(1)(2) + frac(1)(...

Find the values of `frac(1)(2) + frac(1)(6) + frac(1)(20)+frac(1)(30)`

A

(a)`frac(9)(8)`

B

(b)`frac(5)(6)`

C

(c)`frac(3)(4)`

D

(d)`frac(11)(30)`

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