Question

x+y=4 and x-y=2 then value of xand y are​

Answer 1

Answer:

you can also substract. But lets add to make things easy.

Adding the two equations: -

(X-Y)+(x-y)=2+4

2x=6

X=6/2

X=3

Now putting the value of ‘x’ in 1st equation, we get

3-y=2

Y=3–2

Y=1.

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Answer 2

Given:

$x + y = 4........(1) \\ x - y = 2.........(2) \\ \\ Solution :</p><p>\\adding \: (1) \: and \: (2) \\ \: 2x = 6 \\ x = \frac{6}{2} \\ \\ x = 3 \\ substituting \: x = 3 \: in \: equation \: (1) \\ 3 +y = 4 \\ y = 4 - 3 \\ = 1$