Divide the sum of 65/12 and 12/7 by their differences
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65/12+12/7
=65×7/84+12×12/84
=455/84+144/84
=599/84
65/12-12/7
=65×7/84 - 12×12/84
=455/84 - 144/84
=311/84
599/84÷311/84
=599/84×84/311
=599/311
=65×7/84+12×12/84
=455/84+144/84
=599/84
65/12-12/7
=65×7/84 - 12×12/84
=455/84 - 144/84
=311/84
599/84÷311/84
=599/84×84/311
=599/311
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