introproducerthefirs introproducerthefirs 09-12-2022 Mathematics contestada the steps derek used to solve an equation are shown below. Solve: 0.4x + 5 + 0.2x = 17 Step 1 : 0.4x + 0.2x + 5 = 17 Step 2: 0.6x + 5 = 17 Step 3: 0.6x = 12 Step 4: x = 20 Which properties justify step 1 and step 3?