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Determina x astfel incat : 3,(2)+x<9,(7) in N

Răspuns :

3,(2)+x<9,(7) in N
29/9+x<88/9
x<(88-29)/9
x<59/9
x<6,(5)
x
∈{0,1,2,3,4,5,6}
................................
q.e.d.