Ответы и объяснения

2013-06-01T05:19:16+00:00
  • Участник Знаний
2013-06-01T05:43:15+00:00

54X\108 + 12*(4X+Y)\108 = 108\108 + 9*(7Y-1)\108

54X + 48X + 12Y = 108 + 63Y - 9

102X = - 12Y + 63Y + 99

X = (51Y + 99) \ 102

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X+Y\2 - 5Y-X\6 + 3Y-1\5 = X

15*(X+Y)\30  - 5*(5Y-X)\30 + 6*(3Y-1)\30 = 30X\30

15X + 15Y - 25Y + 5X +18Y - 6 = 30X

8Y = 10X + 6

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8Y = 10*(51Y + 99)\102 + 6

8Y = 510Y + 990 \ 102 + 6

816Y = 510Y + 990 + 612

306Y = 1602

Y = 5.235

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X = (266.985 + 99)\102 = 3.588

ответ: Х = 3.588  Y = 5.235