[" What fraction of "4/7," should be added to "],[" itself to become "1(1)/(14)?]

What fraction of (4)/(7) must be added to itself to make the sum 1(1)/(14)?(1)/(2)(b)(4)/(7)(c)(7)/(8)(d)(15)/(14)

What number should be added to -1 so as to get (5)/(7) ?

What should be added to (7)/(12) to get (-4)/(15) ?

What should be added to 6(7)/(15) to get 8(1)/(5)?

What fraction is? 7 of 4(1)/(2) dozen

What number should be added to (100)/(7) to -3(3)/(14)

What should be added to ((5)/(6) - (7)/(8)) to get (1)/(2) ?

What should be added to 7 4/15 — to get 8 2/5 — ?

What number should be added to (-7)/(8) to get (4)/(9) ?