\(325 \) points Point \( B \) is on segment \( A C \) . The length of segment \( A C = 7 x + 6 \) , the length of segment \( A B = 6 x - 1 \) , and the length of segment \( B C = 4 x - 5 \) . Draw a diagram to represent the situation. What is the length of segment \( A B \) ?
\( 34 \) units
\( 38 \) units
\( 40 \) units
\( 23 \) units