Question

To solve x + y = 3 ; 3x -2y - 4 =0 by deteminant method find D . (A) 5 (B) 1 (C) -5 (D) -1​

Answer 1

Answer:

-1

Step-by-step explanation:

x+y=3

x=3-y

3x-2y-4=0

3*(3-y) -2y -4=0

9-3y-2y-4=0

5-5y=0

-5y= -5

y= -5÷5

= -1