the sum of the digits in two digit number is 15 and the difference between digitis number is 3 what is the two digit number??
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Step-by-step explanation:
So the number can be xy or yx
from the question, we know
x+y=15 …….(1)
and x−y=3 …….(2)
solving these
Add (1)+(2)
x+y=15
+ x−y=3
2x=18
∴x=
2
18
=9
Using (x=9) in equation (1)
x+y=15
9+y=15
So y=15−9=6
y=6
So, x=9 & y=6
The digits can be 69 or 96.
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