If $131_{a}$ is equal to the base 10 integer 55, find $a$ given that $a>0$.
Question:
If $131_{a}$ is equal to the base 10 integer 55, find $a$ given that $a>0$.
Answer:
Let's think step by step.

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If $131_{a}$ is equal to the base 10 integer 55, find $a$ given that $a>0$.
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