Question
Students were asked to solve the equation y = x -a/b for a. Their work is shown below. Which student solved the equation correctly? Justify your answer by explaining why the other two students solved the equation incorrectly.
Student 1
y = x -a / b
by = x -a
by - x = a
Student 2
y = x -a / b
y / b = x -a
y / b - x = -a
- y / b + x = a
Student 3
y = x -a/b
b y = x -a
b y -x = -a
- b y + x = a
Student 1
y = x -a / b
by = x -a
by - x = a
Student 2
y = x -a / b
y / b = x -a
y / b - x = -a
- y / b + x = a
Student 3
y = x -a/b
b y = x -a
b y -x = -a
- b y + x = a
Answers
Answer
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