\(\dfrac{2}{3}-\dfrac{3}{5}=\dfrac{2}{3}+\left(-\dfrac{3}{5}\right)=\dfrac{10}{15}+\left(-\dfrac{9}{15}\right)=\dfrac{1}{15}\)
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\(\dfrac{2}{3}-\dfrac{3}{5}=\dfrac{10}{15}-\dfrac{9}{15}=\dfrac{1}{15}\)
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