Question

3x+y=10;x-y=2 Cramer rule

Answer 1

Answer:

x=3

y=1

Step-by-step explanation:

D=3/1. 1/(-1)

-3-1

=-4

Dx=10/2. 1/(-1)

-10-2

=-12

DY = 3/1. 10/2

6-10

=-4

x=Dx/D.

=-12/-4=3

y=Dy/D

=-4/-4=1