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Mario792
a fost răspuns

rezolvati dupa procedeul 2, inegalitatile x+15<27 ,20+x<101

Răspuns :

Denisaandreeata

x+15<27

x<27-15

x<12

x€{0,1,2,3,4,5,6,7,8,9,10,11}


20+x<101

x<101-20

x<81

x€{0,1,2,3....80}



Mai2001
a) x+15<27-> x< 12-> x apartine {11,10,9,....,-∞}.............. b) 20+x<101-> x< 81-> x apartine { 80,79,78,...,-∞}