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A two digit number is such that, the sum of it's digits is 13.When the digits are interchanged,the original number is increased by 9.Find the original number.
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Apr 4, 2022
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Mathematics Form 1
by
daisylumumba
A two digit number is such that,the sum of it's digits is 13. When the digits are interchanged , the original number is increased by 9. Find the original number.
integers
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Apr 7, 2022
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vickyshee
67
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Nov 13, 2022
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0746658XXX
14
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Nov 15, 2022
by
0704787XXX
Let the numbers be x and y
The number is xy
x+y=13....(I)
yx- xy = 9....(ii)
(10y+x)-(10x+y) = 9.....(ii)
9y-9x=9....(ii).
y=(13-x)...(i)
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Nov 25, 2022
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0746703XXX
12
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Dec 4, 2022
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0716678XXX
11 and 2
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Dec 4, 2022
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0759766XXX
67
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Dec 4, 2022
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0721723XXX
67
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Dec 5, 2022
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0789949XXX
76
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Dec 5, 2022
by
0796370XXX
Y is 1 x is 12
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Jan 7, 2023
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0722446XXX
9
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