Вычислите: а) (1/2 - 0,4 - 0,375)*2/5
-----------------------------
2/3*0,75

б) ((1/5+ 2целых2/3+ 3целых3/4)*15/397)
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-(15целых1/8*2+14)

в) -(3целых1/3*1,9+19,35^4целых1/2
-----------------------------------------------
-(-4/25+62/75)

г) 2,4*3целых3/4-(-2целых2/11*4125)
------------------------------------------------
5целых5/6*2целых4/7





плиииизззм ожно с рищением срочно! даю 70 Баллов
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