Ответы на вопрос:
А) 1-k = 3/5+1/10 1-k = 7/10 k = 1 - 7/10 k = 3/10 б) t+1 = 4/9+2/3 t+1 = 10/9 t = 10/9 - 1 t = 1/9 в) x+2(3/8) = 5(1/4) - 1(3/8) x+2(3/8) = 31/8 x = 31/8 - 19/8 x = 12/8 = 1 целая 1/2
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