how did 13/4 came here?
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13/4
LCM of 1and 12 is 12
3+3/12
=36+3/12
=39/12
=39/3=13,12/3=4
=13/4
LCM of 1and 12 is 12
3+3/12
=36+3/12
=39/12
=39/3=13,12/3=4
=13/4
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