Answer
$\frac{-19}{45}$
Work Step by Step
-$\frac{37}{45}$ - (-$\frac{18}{45})$ Subtract the numerator. Keep the common denominator
=-$\frac{37}{45}$ +$\frac{18}{45}$
=$\frac{-37+18}{45}$
=$\frac{-19}{45}$
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