Question

X+Y=5 and X-Y=1 (with explation)​

Answer 1

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$x + y = 5 - - - (1) \\ x - y = 1 - - - (2)$

${\sf{add \: (1) \: and \: (2)}}$

$2x = 6$

$x = \frac{6}{2}$

${\underline{\underline{\sf{x = 3}}}}$

${\sf{put \: x = 3 \: in \: (1)}}$

$3 + y = 5$

$y = 5 - 3$

${\underline{\underline{\sf{y = 2}}}}$

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