Please help solve with work
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By taking the product of the two fractions we will see that the number that goes in the green box is a 6.
<h3>How to add two fractions?</h3>
We only can add two fractions if we have the same denominator in both of them, here we want to transform -2/3 in an equivalent fraction, such that the denominator is 9, so we multiply both the numerator and denominator by 3.
So we need to solve:
From that, we can conclude that the number that goes in the green box is 6.
If you want to learn more about fractions, you can read: