-3 < a <2
a) -3×2 < 2a <2 ×2
-6 < 2a < 4
[tex]b) \: \frac{ - 3}{2} < \frac{a}{2} < \frac{2}{2} [/tex]
[tex] \frac{ - 3}{2} < \frac{a}{2} < 1 [/tex]
c) (-3)-1 <a-1 < 2-1
-4 < a-1 < 1
d) (-3)×(-3)< -3a < 2×(-3)
9 < -3a < -6
e)2- (-3) < 2-a < 2-2
5 < 2-a < 1
☆ Sper ca te-am ajutat! ☆
