Darpana solved the equation s = a+b+c/3 for a. Her steps are shown below:
1. Multiply by 3: s=a+b+c/3
3s=a+b+c
2. Subtract b: 3s-b=a+b+c-b
3s-b=a+c
3. Divide by c: 3s-b/c=a
Which statement about Darpana’s work is true?
In step 1 she needed to divide by 3 rather than multiply.
In step 2 she needed to add b rather than subtract.
In step 3 she n
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