Math, asked by sabah75, 5 hours ago

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Answered by raziah4689
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a.) \frac{1}{7}  -  \frac{1}{2}  =lcm \: of \: 7 \: and \: 2 = 14 \\  =  \frac{2}{14}   -  \frac{7}{14}  =  \frac{5}{14}

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