MATH SOLVE

5 months ago

Q:
# What is the value of n in the equation 3n + 2(n + 2) = 9n + 12? −4 −2 2 4The work of a student trying to solve the equation 3(4x − 2) = 9 + 2x + 5 is shown below:Step 1: 3(4x − 2) = 9 + 2x + 5Step 2: 12x − 2 = 14 + 2xStep 3: 12x − 2x = 14 + 2Step 4: 10x = 16Step 5: x = 1.6In which step did the student first make an error and what is the correct step? Step 2: 12x − 2 = 4 + 2x Step 2: 12x − 6 = 14 + 2x Step 3: 12x + 2x = 14 + 2 Step 3: 12x − 2x = 14 − 2

Accepted Solution

A:

1. -2 I hope that helps a little bit