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Question
Subtract:
`3/10 - 1/20`
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Solution
20 is the multiples of 10.
So, `3/10 - 1/20 = (3 xx 2)/(10 xx 2) - 1/20`
= `6/20 - 1/20`
= `(6 - 1)/20`
= `5/20`
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