First you add 1/2 and 3/4:
5/4n
5/4n = 12 so you divide both sides by 5/4
That gives you the answer of n= 9.6.
Hope this helped :)
Answer:
well for me I think
Step-by-step explanation:
2/3×2/3
4/9
since they are replacing the black marbles back
7+8 is the answer
But it can also be 11
Here is your perfect answer
