An equation and the steps to solve it are shown below: 5x minus one over five times the quantity 20x plus 5 equals 9 Step 1: 5x – 4x – 1 = 9 Step 2: x – 1 = 9 Step 3: x – 1 + 1 = 9 + 1 Step 4: x = 10 In which step was the error made and why? Step 1, because incorrect signs have been used Step 2, because the terms have been subtracted incorrectly Step 3, because a number has been subtracted from both sides of the equation No error was made
