(5/6-3/10):(3/10+2/5)=

Question

(5/6-3/10):(3/10+2/5)=

Answer 1

=(25/30-9/30):(9/30+4/30)=16/30*30/13=16/13=1 3/13
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Comments

Неправильно написал не 2/5, а 2/15