Question

X+7y=10,3x-2y=7 Cramer rule

Answer 1

Answer:

HEY MATE UR ANS IS AS FOLLOW:

x+7y=10--------(1)

3x-2y=7--------(2)

according to CRAMER'S RULE

A1=1,B1=7,C1=10

A2=3,B2=-2,C2=7

For D,

D=A1 B1. DX=C1 B1. Dy=A1 C1

A2 B2. C2 B2. A2 C2

Now put the values...

D=1 7

3 2

=1×2-7×3

=2-21

=-19

DX= 10 7

=7 (-2)

=10×(-2)-7×7

= -69

Dy=1 10

3 7

=1×7-10×3

=-23

X=DX/d

= -69/-19

=69/19

Y=Dy/d

=-23/-19

= 23/19

HOPE SO THIS HELPS U....

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