Question

To solve x+y=3, 3x-2y - 4 =0 by
determinant method find D.​

Answer 1

Answer:

x=2,y=3-2=1

Step-by-step explanation:

x+y=3

y=3-x...... (1)

3x-2y-4=0......(2)

putting(1)in(2),

3x-2(3-x) -4=0

3x-6+2x=4

5x=4+6

x=10/5=2

Answer 2

Answer:

x=2,y=1

Step-by-step explanation:

x+y=3........(1)

3x+2y-4=0

3x+2y=4.....(2)

3x+3y=9[(1)*3]

3x+2y=4

By using sign convention

5y =5

y =1

substitute y=1 in equation 1 we get

x+y=3

x+1=3

x=3-1=2

so x=2, y=1