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Question
Simplify: `3 3/4 xx 1 1/5 xx 20/21`
Sum
Solution
`3 3/4 xx 1 1/5 xx 20/21`
`= 15/4 xx 6/5 xx 20/21`
`= (15 xx 6 xx 20)/(4 xx 5 xx 21) = 1800/420 = (1800 div 60)/(420 div 60)` (HCF of 1800 and 420 = 60)
`= 30/7 = 4 2/7`
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