3x-y=-4 and x-y=2 show inElimination method – InterviewSolution

1.

3x-y=-4 and x-y=2 show inElimination method

Answer»

$3x - y = - 4 \: --- (i)$

$x - y = 2 \: ---- (ii)$

$multiply \: eq(ii) \: with \: 3$

$3x - 3y = 6 \: - - - - (iii)$

$subtract \: (i) \: and \: (iii)$

$3x - y = - 4 \\ 3x - 3y = 6 \\ - \: \: \: \: \: \: + \: \: \: \: \: - \\ - - - - - - - - \\ 0 + 2y = - 10$

$2y = - 10$

$y = \frac{ - 10}{2}$

$y = - 5$

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