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The voltage in an electric circuit are related by following equations : V1+V2+V3=9;V1V2+V3=1findV1,V2andV3byusingcramersrule.
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Solution:

D=|111111111|

=1(1-1)-1(-1-1)+1(1+1)= 4

DV1=|911311111|

= 9(1-1)-1(-3-1)+1(3+1) = 8

V1=DV1D=84=2

DV2=|191131111|

= 1(-3-1)-9(-1-1)+1(1-3) = 12

V2=DV2D=124=3

DV3=|119113111|

V3=DV3D=164=4

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