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

Question

Mathematics

Guest

25 August, 23:54

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

+5

Answers (2)

Know the Answer?

Kaylin Fitzpatrick · Answer 1

No error was made

Step-by-step explanation:

I just took the test.

Danielle · Answer 2

no error was made

Step-by-step explanation:

5x - 1/5 * (20x + 5) = 9

distribute

5x - 4x-1 = 9

combine like terms

x-1 = 9

add 1 to each side

x-1+1 = 9+1

simplify

x = 10