Question

solve the equation simultaneous by determinant method x+y-5=0;2x-y-4=0​

Answer 1

Answer:

Using by cramer's rule,

D=|1 1|

|2 -1|

D=(1×-1)+(2×1)

=1

D1=|5 1|

|4 -1|

D1=(5×-1)+(4×1)

=-1

D2=|1 5|

|2 4|

=(4×1)+(5×2)

=14

we know,

x=D1/D

=1/-1

= -1 ans.

y=D2/D

=14/1

14 ans.

:-Ans is write or wrong plz tell me .