Let's solve your inequality step-by-step.
−x−3<13+3x
Step 1: Simplify both sides of the inequality.
−x−3<3x+13
Step 2: Subtract 3x from both sides.
−x−3−3x<3x+13−3x
−4x−3<13
Step 3: Add 3 to both sides.
−4x−3+3<13+3
−4x<16
Step 4: Divide both sides by -4.
−4x
−4
<
16
−4
x>−4