Question

uations using Cramer's rule :
(ii) 3x – 4y = 1
x + 2y = 7​

Answer 1

Answer:

D=3,4

1,2

3*2 -4*1 =6-4 =2

dx=1,4

7,2

1*2-4*7=2-(-24)=26

Dy=3,1

1,7

3*7-1*1=21-1 =20

by Cramer's rule

x =dx/d =26/2 =13

y =dy/d =20/2 =10

the value of x=13 & y=10