Răspuns:
Explicație pas cu pas:
19,2 - 7,1 = 12,1
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27,84 - 4,12 = 23,72
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8,797 - 2,429 = 6,368
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9,64 - 4,2 = 5,44
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28,97 - 5,9 = 23,07
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24 - 0,12 = 23,88
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87 - 4,253 = 82,747
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9 - 0,08 = 8,92
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25 - 4,5 = 20,5
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8,(7) - 3,(2) = 5,(5)
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11,(12) - 4,(23) = (1112 - 11)/99 - (423-4)/99 = 1101/99 - 419/99 = 682/99 = 6,(8)
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9,2(5) - 6,1(3) = (925 - 92)/90 - (613 - 61)/90 = 833/90 - 552/90 = 281/90 =
= 3,1(2)
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7,(8) - 3,4(5) = (78 - 7)/9 - (345 - 34)/90 = 71/9 - 311/90 = 710/90 - 311/90 =
= 399/90 = 4,4(3)
