Answer:
2/15
Explanation:
find a common denominator:
3, 6, 9, 12, 15
5, 10, 15
the common denominator is 15.
add by how many times you added 3 and 5.
3+4=7/15
do the same with 5 and subtract the answers:
7/15-5/15= 2/15
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