Question

Solve both this is From pair of Linear equation in two variable​

Answer 1

Step-by-step explanation:

1) x+y/ xy =7/10

x/xy + y/xy = 7/10

y + x = 7/10

10y + 10x = 7 (i)

x-y/xy = 3/10

x/xy - y/xy = 3/10

y - x =3/10

10y - 10x = 3 (ii)

now solving eq (i) and (ii) using eliminations

10y + 10x = 7

10y - 10x = 3

20y = 10

y= 1/2

now substitute y value in eq (ii)

10/2 - 10x = 3

10 - 20x/2 =3

10 - 20x = 6

-20x = 6 - 10

-20x = -4

x= 1/4