3. 2 / 5-1 / 3 + 1 / 2 4, 5 / 8 + 2 / 5-3 / 16

2/5-1/3+1/2
=12/30-10/30+15/30
=17/30
5/8+2/5-3/16
=50/80+32/80-15/80
=67/80

RELATED INFORMATIONS

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