Question

4
B) Solve the following questions.
For simultaneous equations in variables x and y. Dx = -28, Dy = 14, D = 14,
then what is x ?​

Answer 1

Step-by-step explanation:

Given D

x

=49,D

y

=−63,D=7

from cramer's rule

x=

D

D

x

,y=

D

D

y

⇒x=

7

49

⇒x=7

Answer 2

Answer:

x=2

Step-by-step explanation:

Dx=28

Dy=14

D=14(given question)

14x=28

x=28/14

x=2