Решите уравнение пжжжж

Question

Решите уравнение пжжжж

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Answer 1

2/5*5/3х-1/5-1/6=1/20
2/3х-1/5-1/6=1/20
2/3х=1/20+1/5+1/6
2/3х=5/12
х=5/12:2/3
х=5/8=0,625