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Answer:
23/120
Step-by-step explanation:
4/15 + 2/-5
= 4/15 + -2/5
= 4/15 - 2/5
Taking LCM of 15 and 5, i.e., 15
= (4-6)/15
= -2/15
-3/10 + 5/8
Taking LCM of 10 and 8, i.e., 40
= (-12+25)/40
= -13/40
-2/15 - -13/40
= -2/15 + 13/40
Taking LCM of 15 and 40, i.e., 120
= (-16+39)/120
= 23/120
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