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Verify the following: (i) (3)/(7) xx...

Verify the following:
(i) `(3)/(7) xx ((5)/(6) +(12)/(13)) = ((3)/(7) xx (5)/(6))+((3)/(7)xx(12)/(13))`
(ii) `(-15)/(4) xx ((3)/(7) +(-12)/(5))=((-15)/(4)xx (3)/(7))+((-15)/(4)xx (-12)/(5))`
(iii)`((-8)/(3)+(-13)/(12))xx (5)/(6) = ((-8)/(3) xx (5)/(6)) +((-13)/(12) xx (5)/(6))`
(iv) `(-16)/(7) xx ((-8)/(9) + (-7)/(6)) = ((-16)/(7) xx (-8)/(9)) + ((-16)/(7)xx (-7)/(6))`

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(5)/(6) -: (6)/(7) xx ? - (8)/(9) -: 1 (2)/(5) -: (3)/(4) xx 3 (1)/(3) = 2(7)/(9)

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(9)/(10)-:(7)/(8) of (11)/(12) of (7)/(9)times(5)/(6)