Question

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Answer 1

Răspuns:

Explicație pas cu pas:

2a.

11/(2x - 1) > 1

11 > 2x - 1

2x < 11 + 1

2x < 12

x < 6

x = {0, 1, 2, 3, 4, 5}

______________

b.

(2x + 7)/(3x - 3)  = 1

2x + 7 = 3x - 3

3x - 2x = 7 + 3

x = 10

__________________________

3.

42/56 = 6/8 = 3/4

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39/52 = 3/4

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55/121 = 5/11

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18/45 = 2/5

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72/96 = 36/48 = 9/12 = 3/4