Question

please answer by soloing please​

Answer 1

Answer:

8/5

Step-by-step explanation:

1/x+1/y=5

y+x/xy=5

Given x+y=8

8/xy=5

xy=8/5

Answer 2

Step-by-step explanation:

$\frac{1}{x} + \frac{1}{y} = 5.(1)$

x+y=8 (2)

x=8-y...(3)

Puttiue of equation (3) in (1).

y+8−y=5y(8−y)

8=40y−5y²

8−40y+5y² =0

$y = \frac{40 + 12 \sqrt{10} }{10} , \frac{40 - 12 \sqrt{10} }{10}$

$</p><p></p><p> </p><p>.</p><p></p><p>x+y=8 .(2)</p><p>x=8-y.(3)</p><p>Puttiue of equation (3) in (1).</p><p></p><p>y+8−y=5y(8−y)</p><p>8=40y−5y²</p><p>8−40y+5y² =0</p><p>.</p><p></p><p></p><p>$