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Solve the following pair of linear equations x-7y = 5 and 3x-4y = -2 |
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Answer» x-7y=5. ........13x-4y=-2........2Multiply EQN 1 by 3,3(x-7y)=3(5)3x-21y=15.........3Subtracting eqn 2 from eqn 3,3x-21y-3x+4y=15 -(-2)-17y=17y= -17/17 = -1Putting the above VALUE in eqn 1,x-7(-1)=5x+7=5x=7-5 x = 2Hence,x =2,y= -1. |
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