Question

She completes the problem as seen in the steps below.

2(x + 1) + 1 = 5
Step 1: 2(x+1)=4
Step 2: (x+1)=2
Step 3:
X = 1
This can't be right! She checks her solution and realizes the answer is
n which step did Jessica make an error? Explain why she made the

Answer 1

D. all the steps are incorrect
Explanation:
she needs to distribute the 2 into the parenthesis first due to PEMDAS
2x+2+1= 5
2x+3=5 then isolate the x
-3 -3
2x=2
(2x)/2=2/2
x=1

Answer 2

• All her steps are right, and the answer is right as well

Explanation:

`2(x + 1) + 1 = 5 \\ 2(x + 1) = 5 - 1 \\ 2(x + 1) = 4 \\ \\ (2(x + 1))/(2) = (4)/(2) \\ \\ x + 1 = 2 \\ x = 2 - 1 \\ x = 1`