Question

what should be added to (-1/3+2/5+1/6) to get 12 ​

Answer 1

$- \frac{ 1}{3} + \frac{2}{5} + \frac{1}{6} \\ = > \frac{ - 10 + 12 + 5}{30} \\ = > \frac{7}{30}$

now, subtract 7/30 from 12
I.e.,
12-7/30=353/30
I hope it was helpful.... :)

Answer 2

Suppose that X should be added to (-1/3+2/5+1/6)to get 12.

Hence,,

$x + ( \frac{ - 1 }{3 } + \frac{2}{5} + \frac{1}{6} ) = 12 \\ = > x + ( \frac{ - 10 + 12 + 5}{30} ) = 12 \\ = > x + ( \frac{ - 10 + 17}{30} ) = 12 \\ = > x + \frac{7}{30} = 12 \\ = > x = 12 - \frac{7}{30} \\ = > x = \frac{360 - 7}{30} \\ = > x = \frac{353}{30}$

Hence 353/30 should be added to (-1/3+2/5+1/6)to get 12

Hope you like this.. thanks