Tim's error was likely in the step where he transposed the constant term to the other side of the equation.
Here is the breakdown of the correct steps to solve the equation:
1. Start with the given equation: X + 7 = -15
2. To isolate the variable X, subtract 7 from both sides of the equation:
X + 7 - 7 = -15 - 7
X = -22
So, the correct solution is X = -22.
Feedback for Tim:
Tim, it seems like you made a mistake when transposing the constant term to the other side of the equation. Make sure to perform the same operation on both sides of the equation to maintain the equality. Additionally, double-check your calculations to avoid computational errors. Keep practicing and you'll improve!
Tim solved the equation X + 7 = -15
When he checked back his solution didn’t work
What was his error?
“Grade” his paper and provide propped helpful feedback below. You can either include the steps to get the correct answer or describe what he did wrong
1 answer