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A) 19+x< 43 b) 28-x> 11

Răspuns :

a) 19+x<43
     x<43-19
     x<24
     x={0,1,2,3,4,5,6,7,8,9,10,.........,24}

b) 28-x>11
     x>28-11
     x>17
     x={18,19,20,21,22,23,24,25,..........}
 a.19+x<43
x<43-19
= x<24
b.
28-x> 11
-x>11-28
-x>-17
x<17

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