Both 12s cancel out so the answer is 5.
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The sum of 5/12 and 5/12 is 5/6
5 over 12 (5/12) is the same as 5 divided by 12: 5 ÷ 12 = 0.4167
12/5 ÷ 12/9 = 12/5 x 9/12 = 9/5 = 14/5
It is: 12/5
5/12 - 9/12 = -4/12