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Afla toate solutiile posibile:
x × 7 < 43. x × 9 < 63


Răspuns :

[tex]7x\ \textless \ 43 \\ x\ \textless \ 6[/tex]
x∈(-∞,6)

[tex]9x\ \textless \ 63 \\ x\ \textless \ 7[/tex]
x∈(-∞,7)