Question

find the common solutions for pair 6x-5y+8 and 18x-15y=16​

Answer 1

Step-by-step explanation:

The equation are

2kx+5y−7=0

6x−5y−11=0

Here, a

1

=2k,b

1

=5,c

1

=−7

and a

2

=6,b

2

=−5,c

2

=−11

Forthesystemtohaveuniquesolution

⇒

a

2

a

1



=

b

2

b

1

⇒

6

2k



=

−5

5

⇒2k



=−6⇒k



=−3