The sum of two digits of a two-digit number is 8. When the digits are interchanged the number is reduced by 18. Represent the given situation in the form of two Linear Equations.
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➡️ One's place = x.
Tens place = y.
➡️ Given, x + y = 8.
Or, y = 8 - x.
➡️ And we have,
10x + y - 18 = 10y + x.
Or, 9x - 9y = 18.
Or, 9x - 72 + 9x = 18.
Or, 18x = 90.
Or, x = 5.
And y = 8 - 5 = 3.
➡️ Hence, the number is
= 10(5) + 3.
= 50 + 3 = 53.
That's it..
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