Question

please solve fast. it is a que.of pair of liner eq.with two variables​

Answer 1

☸ Required Answer is ⬇⬇⬇⬇⬇

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So, the difference of the two unknown numbers is 4.

X - Y = 4 ------→ (1)

Here the reciprocal of X = 1/X

Here the reciprocal of Y = 1/Y

The difference of the reciprocals is 4/21

21Y - 21X = 4XY ------→ (2)

From the Equation (1)

X – Y = 4

X = 4 + Y ------→ (3)

Combining the equation (2) and (3) we get.

Y = 12/4  

Y = 3

Substituting the Y in equation (1) we get

X = 4+3

X = 7

Hence the two unknown number are 7 and 3.

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Answer 2

X - Y = 4 ------→ (1)

Here the reciprocal of X = 1/X

Here the reciprocal of Y = 1/Y

The difference of the reciprocals is 4/21

21Y - 21X = 4XY ------→ (2)

From the Equation (1)

X – Y = 4

X = 4 + Y ------→ (3)

Combining the equation (2) and (3) we get.

Y = 12/4  

Y = 3

Substituting the Y in equation (1) we get

X = 4+3

X = 7

Hence the two unknown number are 7 and 3.