3/8 + 3/5 = 39/40 and 39/40 Can't be simplified
First, find common denominators. Remember that what you multiply to the denominator, you multiply to the numerator too:
(3/8)(5/5) = 15/40
(3/5)(8/8) = 24/40
Simplify
15/40 + 24/40 = 39/40
39/40 is your answer
hope this helps
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