Answer:
4/10 + 5/10 = 9/10
Explanation:
beacause the denomenator remains the same, you need not to do anything with it. however, you add 5 to the 4 to get 9
All we need to do, is take the starting point (4/10), how much we are adding by (5/10), and the end point (9/10).
We put everything together into an equation.
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