2/5+1,83, 6,4-3/20, 9,8*3/10

Question

2/5+1,83, 6,4-3/20, 9,8*3/10

Answer 1

1)2/5+1,83=2,23
2)6,4-3\20=6,25
3)9,8*3\10=2,94
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УДАЧИ!!!!!!