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find the value of k for which the pair of linear equation 2 X + 3 Y equal to 7 and 4 x + a y equal to 14 |
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Answer» Answer: consider equation (1) 2X + 3y = 7 MULTIPLE whole equation with 2 ( 2x + 3y = 7 ) * 2 now 4x + ay = 14 ............ (1) 4x + 6y = 14 ............(2) substracting (2) with (1) we get ay - 6y = 0 ==> ay = 6y y on both sides get cancel ==> a = 6 |
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