Answer:
a/3(a+b)
Explanation:
We can divide both the top and bottom of the expression by 3 to reduce the fraction. This gives us a/3(a+b), which is fully reduced.
a / 3(a + b).
3a / (9(a + b))
The 3/9 cancels to 1/3 so the answer is
a / 3(a + b)
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