Question

x+y=1, x-y=2 find x and y
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Answer 1

Answer:

$x = \frac{3}{2} \: and \: y = \frac{ - 1} { 2}$

Step-by-step explanation:

$x + y = 1 \: \: \: \: \: \: \: .......eq(i)$

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

$adding \: eq(i) \: and \: eq(ii)$

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

$(x + x ) + (y - y) = 3$

$2x = 3$

$x = \frac{3}{2}$

$putting \: these \: value \: of \: x \: in \: eq(i) \: to \: \\ get \: value \: of \: y \:$

$\frac{3}{2} + y = 1$

$y = 1 - \frac{3}{2}$

$y = \frac{2}{2} - \frac{3}{2}$

$y = \frac{2 - 3}{2}$

$y = \frac{ - 1}{2}$

$x = \frac{3}{2} \: and \: y = \frac{ - 1}{2}$

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Answer 2

Answer:

x+y=1

=> 1+y=1

=> y=1-1

y=0

x=1

y=0