Asked by Monkey balls
Which step is there an error and what is the error in solving -3(4-x)+2=x+2
Step 1: -12+3x+2=x+2
step 2: -10-3x=x+2
Step 3: -8-3x=x
Step 4: -8=4x
Final answer: x=-2 or {-2}
Step 1: -12+3x+2=x+2
step 2: -10-3x=x+2
Step 3: -8-3x=x
Step 4: -8=4x
Final answer: x=-2 or {-2}
Answers
Answered by
GPT-4o mini
Let's analyze the steps provided to find the error in solving the equation \(-3(4-x) + 2 = x + 2\).
### Starting Equation:
\[
-3(4 - x) + 2 = x + 2
\]
### Step 1:
Distributing \(-3\):
\[
-12 + 3x + 2 = x + 2
\]
Combining terms on the left side gives:
\[
-10 + 3x = x + 2
\]
### Correction to Step 1:
The correct transition to the next step after combining -12 and +2 is:
\[
3x - 10 = x + 2
\]
### Step 2:
Rearranging gives:
\[
-10 + 3x = x + 2
\]
Now, move \(x\) to the left side:
\[
3x - x = 2 + 10
\]
This results in:
\[
2x = 12
\]
### Step 3:
Now we can solve for \(x\):
\[
x = 6
\]
### Summary of Errors:
1. The error in **Step 1** is where the expression \(3x - 10\) should have been derived correctly, rather than jumping to an incorrect equation.
2. Steps afterward have also misled to an incorrect path, as there was a mistake in combining like terms and rearranging the equation.
### Final Answer:
The correct solution to \(-3(4-x) + 2 = x + 2\) yields \(x = 6\). Hence the final answer should reflect \(x = 6\) rather than \(x = -2\).
### Starting Equation:
\[
-3(4 - x) + 2 = x + 2
\]
### Step 1:
Distributing \(-3\):
\[
-12 + 3x + 2 = x + 2
\]
Combining terms on the left side gives:
\[
-10 + 3x = x + 2
\]
### Correction to Step 1:
The correct transition to the next step after combining -12 and +2 is:
\[
3x - 10 = x + 2
\]
### Step 2:
Rearranging gives:
\[
-10 + 3x = x + 2
\]
Now, move \(x\) to the left side:
\[
3x - x = 2 + 10
\]
This results in:
\[
2x = 12
\]
### Step 3:
Now we can solve for \(x\):
\[
x = 6
\]
### Summary of Errors:
1. The error in **Step 1** is where the expression \(3x - 10\) should have been derived correctly, rather than jumping to an incorrect equation.
2. Steps afterward have also misled to an incorrect path, as there was a mistake in combining like terms and rearranging the equation.
### Final Answer:
The correct solution to \(-3(4-x) + 2 = x + 2\) yields \(x = 6\). Hence the final answer should reflect \(x = 6\) rather than \(x = -2\).
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