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Let units digit of the number be x and the tens place be y
original number=x+10y
reversed number is=y+10x
x+y=9-------1
y+10x-(x+10y)=45
y+10x-x-10y=45
9x-9y=45
x-y=5--------2
From adding 1 and 2, we get:
2x=14
x=7
Put in 1
y+7=9
y=2
The number is 27
original number=x+10y
reversed number is=y+10x
x+y=9-------1
y+10x-(x+10y)=45
y+10x-x-10y=45
9x-9y=45
x-y=5--------2
From adding 1 and 2, we get:
2x=14
x=7
Put in 1
y+7=9
y=2
The number is 27
bulbul2005:
the answer is write
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