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DAU COROANA

Inecuatii de gradul intai

2x+5>7
7x-2>26
7x-3>19


Răspuns :

Răspuns:

2x+5>7

2x>7-5

2x>2

x>1

7x-2>26

7x>26+2

7x>28

x>28:7

x>4

7x-3>19

7x>19+3

7x>21

x>21:7

x>3