\[\boxed{\mathbf{62}.}\]
\[1)\ |3x + 1| \leq 7\]
\[- 7 \leq 3x + 1 \leq 7\]
\[- 8 \leq 3x \leq 6\]
\[- \frac{8}{3} \leq x \leq 2.\]
\[2)\ |2 - x| < 3\]
\[- 3 < 2 - x < 3\]
\[- 1 < x < 5.\]
\[3)\ |2x - 3| > 1\]
\[- 1 > 2x - 3 > 1\]
\[2 > 2x > 4\]
\[1 > x > 2\]
\[При\ x > 2;\ \ x < 1.\]
\[4)\ |1 - x| \geq 4\]
\[- 4 \geq 1 - x \geq 4\]
\[- 5 \geq - x \geq 3\]
\[При\ x \leq - 3;\ \ x \geq 5.\]