**Books**

Algebraic Methods of Solving a Pair of Linear Equations
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Questions

**Q.**
A two digit number is obtained by either multiplying the sum of the digits by 8 and adding 1, or by multiplying the difference of ...
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1 answer under Algebraic Methods of... 8 years, 2 months ago

**A.**
Let xy be the unknown number. ==> x = tens digit, and y = ones digit.
Then from the given, 8(x+y) + 1= 10x + y, and 13(x-y) + 2 = 10x + y.
<==> 2x - 7y = 1 and -3x + 14y = 2
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8 years, 2 months ago
answer

1 answer under Algebraic Methods of... 8 years, 2 months ago

8 years, 2 months ago

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