To solve this expression, we first need to find a common denominator for each pair of fractions:
(3/7 - 1/4) = (12/28 - 7/28) = 5/28(2/3 - 3/5) = (10/15 - 9/15) = 1/15
Now we can add the two results and then add 0.5:
(5/28 + 1/15) = (75/420 + 28/420) = 103/420
Finally, we add 0.5 to the result:
103/420 + 0.5 = 103/420 + 210/420 = 313/420
Therefore, the final answer is 313/420.
To solve this expression, we first need to find a common denominator for each pair of fractions:
(3/7 - 1/4) = (12/28 - 7/28) = 5/28
(2/3 - 3/5) = (10/15 - 9/15) = 1/15
Now we can add the two results and then add 0.5:
(5/28 + 1/15) = (75/420 + 28/420) = 103/420
Finally, we add 0.5 to the result:
103/420 + 0.5 = 103/420 + 210/420 = 313/420
Therefore, the final answer is 313/420.