2/3
10 over 15 turned into simplest form
It is: 10/15 = 2/3 in its simplest form
10/15 = 2/3
3 over 2
As a fraction 10/15 ; We reduce the faction by '5', because '5' is a common factor ; 5 x 2 = 10 amd 5 x 3 = 15 Hence 10/15 = 2/3 in its simplest form . NB When cancelling down/reducing any fraction look for the common factors in both the numerator(top) and the denominator(bottom) number. In this case, any number that ends in '5' or '0' has a common factor of '5'. So you reduce/cancel down by '5'. Refer to your 5 times multiplication table.
1/10 + 1/15 is 1/6
2/3
2/3
2/15
It is: 15/10 = 3/2
35
divide top and bottom by 5: 10/15 = 2/3