Answer:
1/2+(2/3+3/4) = 1/2+(2/3+3/4)
0.5+(0.33..+0.75)
I'll first solve the one's in the bracket.
Making it= 1.0833..
Then I'll add it to the one outside the bracket.
Making it 1.5833..
Same thing applies to the other one...
1.5833..=1.5833
This also means that in associative property,no matter how you arrange them, you'll still get the needed product..