Решите...........срочно

Question

Решите...........срочно

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Answer 1

1) 3 3/5-1 7/9=18/5-16/9=162/45-80/45=82/45
2) 1/2-1/3=3/6-2/6=1/6
3) 82/45*1/6=82/270=41/135
4) 52/45-41/135=156/135-41/135=115/135=23/27
ответ 23/27