Answer
$\frac{5}{9}$
Work Step by Step
Step 1: $\frac{4}{9}+\frac{1}{9}$
Step 2: $\frac{4+1}{9}$
Step 3: $\frac{5}{9}$
Step 4: No further simplification possible, so the answer is $\frac{5}{9}$.
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