For the sake of showing work I will replace the empty space with an x like so...
![(1)/(6) =(2)/(x)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/fzx3ckz0ep2wm7st5psye9ymzfc0e5bypy.png)
To find out what x is you must cross multiply (aka butterfly)
1*x = 2*6
1x = 12
x = 12
***If you don't understand the "cross multiply" technique let me know in the comments and I'll be happy to explain.
To make these fractions equivalent the empty spot must be 12
![(1)/(6) = (2)/(12)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/c0ynfxfpepv3z38dwq9x5j40g9bv2cvtvm.png)
Hope this helped!
~Just a girl in love with Shawn Mendes