Calculate: (1)/(2)-(3)/(5)

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Expression: $\frac{ 1 }{ 2 }-\frac{ 3 }{ 5 }$

Write all numerators above the least common denominator $10$

$\frac{ 5-6 }{ 10 }$

Calculate the difference

$\frac{ -1 }{ 10 }$

Use $\frac{ -a }{ b }=\frac{ a }{ -b }=-\frac{ a }{ b }$ to rewrite the fraction

$\begin{align*}&-\frac{ 1 }{ 10 } \\&\begin{array} { l }-0.1,& -{10}^{-1}\end{array}\end{align*}$

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