The sum of the digits of atwo number is 7, when the digit are reversed the number is increased by 9. find the number?
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The answer will be x =4 And y = 3 -
according to fist condition :
x+y = 7 .........(i)
according to sell condition :
10x+y=(10y+x)9
solving :
10x-x+y-10y=9
9x-9y=9
x-y= 1............(I)
By elimination method:
x+y=7
x-y=1 = 2x = 8.= x =4
putting the value of x in eq. 1
x+y=7
4+y=7. = y = 7-4 = y = 3
So, x=4 And y = 3 not sure but think it may be helpful to you.
according to fist condition :
x+y = 7 .........(i)
according to sell condition :
10x+y=(10y+x)9
solving :
10x-x+y-10y=9
9x-9y=9
x-y= 1............(I)
By elimination method:
x+y=7
x-y=1 = 2x = 8.= x =4
putting the value of x in eq. 1
x+y=7
4+y=7. = y = 7-4 = y = 3
So, x=4 And y = 3 not sure but think it may be helpful to you.
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