\[3 - 4a:\]
\[- 3 \cdot ( - 4) > - 4a > 2 \cdot ( - 4)\]
\[- 8 < - 4a < 12\]
\[- 8 + 3 < 3 - 4a < 12 + 3\]
\[- 5 < 3 - 4a < 15\]