Question

7 de la pagina 13 - Matematica clasa a 8-a
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Answer 1

a)

x+4<25

x<25-4

x<21

2x>10

x>10:2

x>5

A={6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21}

b)

2 {A}

4 A

5 A

11EA

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