Question

the sum of two digit number and the number obtained by reversing the order of its digit of 99. express this statement as a lined equation in two variables​

Answer 1

Answer:

answer is 9and9 of the given equation

Answer 2

let the digits are x and y so..

If i write a no. xy then= 10x + y e.g. 32= 10x3+2 so.. reversing of xy is yx and yx=10y+x

Now..

A/Q : x-y=3 eq1 10x+y+ 10y+x = 99 eq 2 x+y=9 eq 3

so from eq 2

10x+y+10y+x= 99 11x+11y=99

Now

from eq 1

we have

x-y=3

x=3+y

substituing value of x in eq 3

x+y=9 3+y+y=9

2y=6

y=3

Substituting value of y in eq1

x-y=3

X-3=3

x=6

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so the no. is 36 or 63

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