6. If $2 x-59$ B) $2 x<18$ C) $3 x<9$ D) $x$ can be all real numbers

Step 1 ：Solve the inequality: \(2x - 5 < x + 4\)

Step 2 ：Subtract x from both sides: \(x - 5 < 4\)

Step 3 ：Add 5 to both sides: \(x < 9\)

Step 4 ：Check the given options:

Step 5 ：A) \(x > 9\) is not true

Step 6 ：B) \(2x < 18\) is true for \(x < 9\)

Step 7 ：C) \(3x < 9\) is true for \(x < 3\), but not for all \(x < 9\)

Step 8 ：D) \(x\) cannot be all real numbers

Step 9 ：\(\boxed{\text{B) } 2x < 18\) is the correct option