Answer
$\frac{1}{3}$
Work Step by Step
Step 1: $\frac{7}{18}-\frac{1}{18}$
Step 2: $\frac{7}{18}+\frac{(-1)}{18}$
Step 3: $\frac{7+(-1)}{18}$
Step 4: $\frac{6}{18}$
Step 5: $\frac{1}{3}$
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