find the sum 1/3 + 3/4 =4/12 + 9/12 (please help quickly and you get brainiest)

Answer:
1.05 or 21/20
Step-by-step explanation:
If this doesn't work, then try 2.1 or 21/10 (that's them added together)
Answer:
13/12 or 1.08
Step-by-step explanation:
4+9=13, so 4/13+9/12= 13/12