Question

For the simultaneous equations in variables x and y if DX = 42, Dy= -66 and D=6 then what is the velue of x?​

Answer 1

Given D

x

=30,D

y

=42 and D=6

now x=

D

D

x

=

6

30

=5y=

D

D

y

=

6

42

=7

∴ The value of x and y is 5 and 7 respectively.

Answer 2

Answer :

X = 7

Y = - 11

Step-by-step explanation:

Given that D. = 6

DX = 42

6 ( X ) = 42

X = 42 / 6

X = 7

DY = - 66

6 ( Y ) = - 66

Y = - 66 / 6

Y = - 11