Respuesta :

2/3 = a/12
get the denominator to equate to both sides.
2/3 * 4 = 8/12
8/12 = a/12
8 = a
you just need to experiment with different numbers, we'll try nummmbbeeerr 10

10/12 = 5/6

Not quite, we'll try 9

9/12 = 3/4

Almost, how about 8

8/12 = 2/3


So, your answer is 2/3 = 8/12