ILL GIVE BRAINIEST IF U GET IT RIGHT Sarah has red and blue modeling clay. When she found that of her modeling clay was red, she gave some to her brothers. She gave of the red clay to Bradley and of it to Shane. Bradley and Shane wanted to determine how much of Sarah's modeling clay they received in all. Sarah said they could find the amount by simplifying the expression . Their mom, Theresa, said that they could find the amount by simplifying the expression .

The absolute value of the difference between the two methods proposed by Sarah and Theresa is.