Question

Solve the following using matrix inversion method .)
x - 2y -1 = 0
x - y + 3 =0​

Answer 1

Answer:

x = 7

y = 4

Step-by-step explanation:

x - 2y - 1 = 0

x - y + 3 = 0

___________

-y - 4 = 0

y = 4

x - 2y - 1 = 0

x - 8 - 1 = 0

x = 7

x - y + 3 = 0

7 - 4 + 3 = 0

Answer 2

2x + 3y = 5 x – 2y = -1 The given system can be written as = -4 – 3 = -7 ≠ 0 ∴ A-1 Exists. ∴ x = 1, y = 1Read more on Sarthaks.com - https://www.sarthaks.com/977641/solve-by-matrix-inversion-method-2x-3y-5-0-x-2y-1-0