Question

The pair of equation 3 x minus 5 equal to 7 and minus 6 X + 10 y equal to 75

Answer 1

Answer:

The equation are

2kx+5y−7=0

6x−5y−11=0

Here, a1 = 2k,b1=5,c1 =−7

and a2 = 6,b2 = −5,c2 = −11

Forthesystemtohaveuniquesolution

⇒ a2/a1 not equal to b1/b2

⇒ 2k/6 not equal to 5/-5

⇒2k not equal to −6⇒k not equal to−3

hope it's help you