Question

For simultaneous linear equations in variables x and y, if Dx = 50,

Dy = 60 and D = 10, then what is the value of y?​

Answer 1

Answer:

5

Dx=25

Dy=50

at D=5

⇒5x=25

⇒x=

5

25

=5

5y=50

⇒y=

5

50

=10

⇒x=5.