Question

Given: 2x + 11 = 15 Prove: x = 2 Statements Reason 1. 2x + 11 = 15 1. Given 2. 2x = 4 2. 3. x = 2 3. Division Property of Equalit

Answer 1

2x + 11 = 15 ⇒  Given

2x + 11 - 11 = 15 - 11 ⇒ Subtracting 11 from both sides, this is the Property of Equality

2x = 4 ⇒ Carried on from the previous line of working out

2x ÷ 2 = 4 ÷ 2 ⇒ Divide both sides by 2, this is the property of division equality

x = 2 ⇒ Proved as required