https://www.khanacademy.org/math/algebra-basics/alg-basics-linear-equations-and-inequalities/alg-basics-multi-step-inequalities/v/multi-step-inequalities-3
https://www.khanacademy.org/math/algebra-basics/alg-basics-linear-equations-and-inequalities/alg-basics-multi-step-inequalities/v/multi-step-inequalities-2
https://www.khanacademy.org/math/algebra-basics/alg-basics-linear-equations-and-inequalities/alg-basics-multi-step-inequalities/v/multi-step-inequalities
Homework: Exercise 11.3 (page 50) # 1 (all) and # 2 (a – e)
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