(19/21+1/7)-9/21 Решите плиз

Question

(19/21+1/7)-9/21 Решите плиз

Comments

19/21+1/7=19/21+3/21=22/21

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22/21-9/21=13/21

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вот так

Answer 1

1) 19/21+1/7 = 19/21 + 3/21 = 22/21

2) 22/21-9/21= 13/21

правильно?

Comments

да