To solve this, we first need to simplify the expressions within the parentheses:
53/9 ÷ 53/36 = (53/9) * (36/53) = 4
Next, we add the result to 5/4:
4 + 5/4 = (16/4) + 5/4 = 21/4
Now, we multiply this result by 5/21:
(21/4) * (5/21) = 105/84 = 5/4
Therefore, the final answer is 5/4.
To solve this, we first need to simplify the expressions within the parentheses:
53/9 ÷ 53/36 = (53/9) * (36/53) = 4
Next, we add the result to 5/4:
4 + 5/4 = (16/4) + 5/4 = 21/4
Now, we multiply this result by 5/21:
(21/4) * (5/21) = 105/84 = 5/4
Therefore, the final answer is 5/4.