Question

solution of the simultaneous equation x+y=1 and x-y=3​

Answer 1

Answer:

$x + y = 1$

$x = 1 - y \: \: \: \: \: \: \: eq \: 1$

$x - y = 3$

$put \: the \: value \: of \: x \: in \: this \: eq$

$1 - y - y = 3$

$- 2y = 2$

$y = - 1$

$x = 1 - ( - 1)$

$x = 2$

Answer 2

Step-by-step explanation:

Adding equation 1 and 2 we get

x+y=1

x-y=1

x=2

Putting the value of x in equation x+y=1 we get

x+y=1

2+y=1

y= -1

Hope it helps

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