Question

sum of the digit of a two digit number is 12 if 18 is added to the original number ,the digit intetchange their places write linear equation
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Answer 1

hi

18/9=2

so the difference between the two digits is of 2

let the smaller one be x

then bigger one is x+2

2x+2=12

x=5

so the no. is 57

Answer 2

Answer:

57

Step-by-step explanation:

Let the number be xy

Given x+y=12

Also given xy + 18 = yx

We know that xy=10x+y

So we get 10x + y + 18 = 10y + x

On further simplification we get x = 5 and y= 7