Solve 3x+2b=6c

for x.

Step 1: 3x+2b−2b=6c−2b
subtract 2b from both sides

Step 2: 3x=6c−2b
combine like terms/simplify

Step 3: 3x3=6c3−2b
divide by 3 on both sides to get x isolated

Step 4: x=2c−2b
simplify/final answer

Which statement is TRUE?

(1 point)
Responses

The process has an error. The correct answer is x=4bc3
The process has an error. The correct answer is x is equal to the fraction with numerator 4 b c and denominator 3

The process has an error. The correct answer is x=2c−23b
The process has an error. The correct answer is x is equal to 2 c minus 2 thirds b

The process has an error. The correct answer is x=−4b−c
The process has an error. The correct answer is x is equal to negative 4 b minus c

The process is correct.

1 answer

Let's review the given steps for solving the equation \( 3x + 2b = 6c \) for \( x \):

Starting equation:
\[ 3x + 2b = 6c \]

Step 1:
Subtract \( 2b \) from both sides:
\[ 3x + 2b - 2b = 6c - 2b \]
This simplifies to:
\[ 3x = 6c - 2b \]
(This step is correct.)

Step 2:
This step just restates what we found in Step 1:
\[ 3x = 6c - 2b \]
(This step is also correct.)

Step 3:
Divide both sides by 3:
\[ \frac{3x}{3} = \frac{6c - 2b}{3} \]
This simplifies to:
\[ x = \frac{6c - 2b}{3} \]
Or, you can separate the terms in the numerator:
\[ x = \frac{6c}{3} - \frac{2b}{3} \]
This further simplifies to:
\[ x = 2c - \frac{2}{3}b \]
(This step shows a misunderstanding in the original answer provided.)

Step 4:
The final answer presented in the original process was:
\[ x = 2c - 2b \]
That is incorrect.

Now comparing it to the provided options:

  1. The process has an error. The correct answer is \( x = \frac{4bc}{3} \) (This is incorrect.)
  2. The process has an error. The correct answer is \( x \) is equal to the fraction with numerator \( 4bc \) and denominator \( 3 \) (This is incorrect.)
  3. The process has an error. The correct answer is \( x = 2c - \frac{2}{3}b \) (This is correct.)
  4. The process has an error. The correct answer is \( x \) is equal to \( 2c - \frac{2}{3}b \) (This is also correct.)
  5. The process has an error. The correct answer is \( x = -4b - c \) (This is incorrect.)
  6. The process is correct. (This is incorrect.)

Thus, the correct statement regarding the given process is:

The process has an error. The correct answer is \( x = 2c - \frac{2}{3}b \).