Question

Choose the correct answer from the given four options :

If `[(x + 2y, -y),(3x, 7)] = [(-4, 3),(6, 4)]` then the values of x and y are

विकल्प

• x = 2, y = 3

• x = 2, y = – 3

• x = – 2, y = 3

• x = 3, y = 2

Answer 1

`[(x + 2y, -y),(3x, 7)] = [(-4, 3),(6, 4)]`

Comparing, we get
3x = 6
⇒  = 2
⇒ -y = 3
⇒ y = – 3
x = 2, y = -3.