Respuesta :
1:
x+19≤-5
x≤-5-19 (by transposition)
x≤-24
2:
3z>-36
z>-36/3 (divide both sides by 3)
z>-12
3:
-0.3n≤5.4
n≥5.4/(-0.3) (divide both sides by -0.3, AND switch direction of inequality)
n≥-18
x+19≤-5
x≤-5-19 (by transposition)
x≤-24
2:
3z>-36
z>-36/3 (divide both sides by 3)
z>-12
3:
-0.3n≤5.4
n≥5.4/(-0.3) (divide both sides by -0.3, AND switch direction of inequality)
n≥-18