Question

Afla valorile lui,,x",numar natural,care verifica inegalitatile:
6+x<11
x-6<(sau egal)9
20-x.15
12-x>(sau egal)7

Answer 1

Explicație pas cu pas:

$6 + x < 11 \iff x < 11 - 6 \\ x < 5 \implies x \in \Big\{ 0; 1; 2; 3; 4; \Big\}$

$x - 6 \leqslant 9 \iff x \leqslant 9 + 6 \\ x \leqslant 15 \implies x \in \Big\{ 0; 1; 2; ...; 14; 15\Big\}$

$12 - x \geqslant 7 \iff 12 - 7 \geqslant x \\ x \leqslant 5 \implies x \in \Big\{ 0; 1; 2; 3; 4; 5\Big\}$