Question

please tell me the answer..​

Answer 1

Answer:

x=1/4 and y=1/3

Step-by-step explanation:

follow the elimination method by multiplying the second equation by 2 and deducting with equation 1 gives the value of Y and then put the value of Y to any of the question 1 of 2 to get the value of X

Answer 2

Answer:

$x = \frac{1}{4} \: \: \: \: \: \: y = \frac{1}{3}$

Step-by-step explanation:

$\frac{1}{x} + \frac{1}{y} = 7 \\ \\ \frac{y + x}{xy} = 7$

$x + y = 7xy \: \: \: \: \: \: \: \: \: (1)$

$\frac{2}{x} + \frac{3}{y} = 17 \\ \\ \frac{2y + 3x}{xy} = 17$

$2y + 3x = 17xy \: \: \: \: \: \: \: \: \: (2)$

Multiplying both sides of (1) by 2,

$2x + 2y = 14 \: \: \: \: \: \: \: \: (3)$

Subtracting (3) from (2),

$2y + 3x - 2x - 2y = 17xy - 14xy \\ \\ x = 3xy$

$y = \frac{1}{3} \: \: \: \: \: \: (4)$

From (1),

$x + y = 7xy \\ \\ x + \frac{1}{3 } = \frac{7x}{3}$

$\frac{1}{3} = \frac{4x}{3} \\ \\ x = \frac{1}{4}$

Thus, x = 0.25 , y = 0.33

Hope it helps