Yuet solved the equation 6a-2b=12 for a. Her steps are shown below.
1. Subtract 2b: 6a = 12 - 2b
2. Divide by 6: a = 2 - 1/3b
Which statement about Yuet's work is true?
In step 1 she needed to add 2b to both sides of the equation.
In step 1 she needed to divide by 2b on both sides of the equation.
In step 2 she needed to divide both sides of the equation by 6.
In step 2 she needed to subtract 6 from both sides of the equation.
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