Answer:
A, 13+t=17
Explanation:
Since you are trying to find the missing part of the diagram and both rows add up to 17, the answer would be A. This is the case because you aren't multiplying 13 over and over to get 17, rather instead you are adding a number to get 17.
a: 13 + t = 17
the top is equal to the bottom
the top is 13 and t together but you are not multiplying
thus the answer is 13 + t = 17
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