Question

Below is a series of steps Mel took to solve an equation. She got the wrong answer. Find Mel's mistake. Then, use order of operations and solve for x.

Answer 1

x=9

Explanation:

Answer 2

Answer: x = 9

Mel's mistake was in the last step, she multiplied by 2 instead of dividing by 2

Explanation:

2x + 1 = 19

Subtract 1 from each side

2x = 18

Divide by 2

x = 9