One twelfth is a fraction plus a fraction We need different natural numbers

I want different natural numbers. I know two answers
In fact, it's very easy to master the algorithm
1/12=10/120,10/120=4/120+6/120=1/30+1/20
=10/120=2/120+8/120=1/60+1/15
A: [1 / 30 + 1 / 20]
[1/60+1/15].

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