(1/9+4/5)-7/15=? 2/3*6/7:4/7=?

Question

(1/9+4/5)-7/15=?
2/3*6/7:4/7=?

Answer 1

2/3*6/7:4/7=1
(1/9+4/5)-7/15=0.44444444

Comments

Развернутый ответ

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Нужен

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2/3*6/7:4/7=2/3*(6:4)=2/3*1,5=1

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(1/9+4/5)-7/15=(5/45+36/45)-21/45=41/45-21/45=20/45=4/9=0.44444

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вот