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प्रश्न
Subtract:
`2/7 - 1/4`
योग
उत्तर
Smallest common multiple of 7 and 4 is 28.
`2/7 - 1/4 = (2 xx 4)/(7 xx 4) - (1 xx 7)/(4 xx 7)`
= `8/28 - 7/28`
= `(8 - 7)/28`
= `1/28`
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