Question

3. 'K' के किस मान के लिए रैखीय समीकरण युग्म 2x -y-3 = 0, 2kx +7y-5 = 0 का एकमात्र हल x = 1, y =-1 है?​

Answer 1

Answer: Simplifying

3y + -7y + 5 = 0

Reorder the terms:

5 + 3y + -7y = 0

Combine like terms: 3y + -7y = -4y

5 + -4y = 0

Solving

5 + -4y = 0

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-5' to each side of the equation.

5 + -5 + -4y = 0 + -5

Combine like terms: 5 + -5 = 0

0 + -4y = 0 + -5

-4y = 0 + -5

Combine like terms: 0 + -5 = -5

-4y = -5

Divide each side by '-4'.

y = 1.25

Simplifying

y = 1.25

• Step-by-step explanation: MARK ME AS BRAINLIEST