what is the original number if the sum of the digit of 2 digit is number 7 by interchanging the digits is 27 more than the original number
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x+y=7
10x+y+27=10y+x
9x-9y=-27
x-y=-3
2x=4
x=2
y=5
The number is 25
10x+y+27=10y+x
9x-9y=-27
x-y=-3
2x=4
x=2
y=5
The number is 25
meenal8:
from where we get 10 in the que
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