
Andy C. answered 08/24/18
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Math/Physics Tutor
I suppose there are many possible answers.
One example is
3/4 + 1/4 = 1

Mark M.
Answering is based on knowledge of how arithmetic works, not on a formula.
Think of two numbers whose sum is 1!
0 + 1
100 + (-99)
1/3 + 2/3
The pairs of numbers all differ (that's subtraction) by 1!
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08/25/18
Easam A.
08/24/18