13/15+9/15-11/15; (3 5/12+4 7/12)-5 2/9

Question

13/15+9/15-11/15; (3 5/12+4 7/12)-5 2/9

Answer 1

13/15 + 9/15 - 11/15 = 22/15 - 11/15 = 11/15
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3 5/12 + 4 7/12 - 5 2/9 = 8 - 5 2/9 = 2 7/9

Comments

Ок! И тебе спасибо.