Answers by visitors named: Nicko

Steps: Follow PEMDAS -8+4=-4 = -4 - 3 - 9 which equals -7 - 9 so -7 - 9 = -16 so -16 would be your answer! :D

A shape that has an irregular edge has: NO lines of symmetry and all the sides are not the same. So look for a shape like that! :D