Explanation:
1/2 is at the simplest form
8/16 need to be divide to the simplest form to determine if they would be the same
dividing the numerator and denominator by 2:
8/2 divided by 16/2
= 4 divided by 8
dividing the numerator and denominator by 2:
4/2 divided by 8/2
2 divided by 4
2/4 = 1/2
they are proportional
