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Sum of the digit of a two digit no. is 14. If we add 18 to the original no., the digits interchange their places. Write two equations for these two



68 is the answer


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The Brainliest Answer!
Let the tens digit = x
and unit digit = y
Original no. = 10x + y
Interchanging digit = 10y + x

10x+y+18 = 10y + x
9x-9y = 18 
9(x-y)= 18
y-x = 2

y- x = 2 is the first equation
We have given 
The sum of the digit of two digit no is 14
that is 
x + y = 14
this is 2nd equation. 

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