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5 2/5-4 3/4 is 13/20. make 2/5 and 3/4 by converting them, find the GCF(20) : 2/5 to 8/20 and 3/4 to 15/20 now add them 15/20-8/20=13/20 answer is 13/20
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5 2/5-4 3/4 is 13/20. make 2/5 and 3/4 by converting them, find the GCF(20) : 2/5 to 8/20 and 3/4 to 15/20 now add them 15/20-8/20=13/20 answer is 13/20