Question

solve x+y=14 and x-y=12​

Answer 1

Answer:

First add both the equations we get 2x = 26 implies x = 13

Now put value of x in first equation we get

13+y = 14 implies y = 1.

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Answer 2

.........ANSWER....... :-)

$x + y = 14 ...........i\\ \\ x - y = 12 ............ii\\ \\ adding \: \: \: equation \: \: \: i \: \: \: \: \: and \: \: \: \: ii \\ \\ \: \: \: \: \: \ \: \: \: \: \: \: \: \: \: \: x + y = 14 \\ ( + ) \: \: \: \: \: \: \: \: \: x - y = 12 \\ - - - - - - - - - - - \\ 2x = 26 \\ \\ x = \frac{26}{2} \\ \\ x = 13 \\ \\ substituting \: \: \: the \: \: \: \: value \: \: \: of \: \: \: x \: \: \: in \: \: \: \: i \\ \\ 13 + y = 14 \\ \\ y = 14 - 13 \\ \\ y = 1 \\ \\ \\ so \: \: \: \: \: x = 13 \\ \: \: \: \: \: \: \: \: y = 1$

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