The number of teaspoons of baking soda needed for 9 cups of sugar is 6 teaspoons of baking soda.
From the information given, we can deduce an equation that can be used to solve the question. This will be:
3/2 = 9/x
Cross multiply
(3 × x) = (2 × 9)
3x = 18
Divide both sides by 3
3x/3 = 18/3
x = 6
Therefore, the number of teaspoons of baking soda needed for 9 cups of sugar is 6 teaspoons of baking soda.
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