N=4.
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Yes, it can be reduced to 1 over 3 because 5 divided by 5 equals 1, and 15 divided by 5 equals 3.
1/3 + 2/5 = 11/15
1 over 3 is a third. A third of 15 equals 5 (3 x 5 = 15)
To calculate 3 over 5 times 1 and 1 over 2, we first convert the mixed number 1 and 1 over 2 to an improper fraction, which is 3 over 2. Then we multiply 3 over 5 by 3 over 2, which gives us 9 over 10. So, 3 over 5 times 1 and 1 over 2 equals 9 over 10.
3/5 divided by 3/8 equals 24/15 which can be simplified to 8/5 or 1 3/5.