Question

Aflati numerele intregi x care verifica simultan relatiile : 3x+9≥0 si -2x+6>0.

Answer 1

3x+9>=(mai mare sau egal)0=>3x>=-9/:3=>x>=-3
-2x+6>0/-6=>-2x>-6/:(-2)=>x>3
x>=-3
x>3
=>x apartine {-3, -2, -1, 0, 1, 2}