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Determinati numerele Nat care verifica relațiile:(x+3)-(120-70)>_50. (75-40)-(x+5)>_0. (21-17)-(5-x)<0. (527-432)-(x+15)>_50

Răspuns :

Fugaciugabriel
a)(x+3)-(120-70)>50
(x+3)-50>50
x+3>100
x>100-3
x>97

b) (75-40)-(x+5)>0
35-(x+5)>0
35>x+5
35-5>x
30>x
x<30

c) (21-17)-(5-x)<0.
4-(5-x)<0
4<5-x
5-x>4
5-4>x
1>x
x<1

d) (527-432)-(x+15)>50
95-(x+15)>50
95-50>x+15
45>x+15
45-15>x
30>x
x<30

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