Question

What is the value of D for solving simultaneous equation 3x-2y=4 and x+y=3 by cramer's Rule?
a) (-1)
b) (1)
c) (-5)
d) (5)​

Answer 1

Answer:

You mean value of y

value of y is (B) 1

Step-by-step explanation:

x+y=3

x=3-y

3x-2y=4

3(3-y)-2y=4

9-3y-2y=4

-3y-2y=4-9

-5y= -5

5y=5

y=5/5

y=1

Answer 2

Answer:

x+y=3

x=3-y

3x+2y=4

3(3-y)+2y=4

9-3y+2y=4

-3y+2y=4-9

-y=5.