@engosammy: 6+4=10, 10+64=74

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engosammy(39)

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2018-06-19 07:55

6+4=10, 10+64=74
7+4=11, 11+74=85
8+5=13, 13+85=98.
Steps
Add the two digits(tens and unit) of the tens, then add the answer to the tens itself
Repeat the steps for others

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2018-06-19 07:55

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