Răspuns :
mulțimea A
[tex]2x + 4 \leqslant 12 \\ 2x \leqslant 12 - 4[/tex]
[tex]2x \leqslant 8 \\ x \leqslant 8 \div 2 \\ x \leqslant 4 \\ [/tex]
x€{1, 2, 3, 4}
Mulțimea B
[tex] {2}^{3} < {3}^{y} < {2}^{7 } \\ 8 < {3}^{y} < 128[/tex]
y€{2, 3, 4}
mulțimea A
[tex]2x + 4 \leqslant 12 \\ 2x \leqslant 12 - 4[/tex]
[tex]2x \leqslant 8 \\ x \leqslant 8 \div 2 \\ x \leqslant 4 \\ [/tex]
x€{1, 2, 3, 4}
Mulțimea B
[tex] {2}^{3} < {3}^{y} < {2}^{7 } \\ 8 < {3}^{y} < 128[/tex]
y€{2, 3, 4}