Question

10. The solution of the equations x-y=2 and x+y=4 is:
(a) 3 and 1
(0) 4 and 3 (c) 5 and 1

(d) -1 and -3​

Answer 1

x-y=2 (I)

x+y=4 (II)

ADD I AND II

2X=6. X=3

PUT X=3 IN (I)

3-Y=2. Y=1

A)3 AND 1

Answer 2

Answer:

a

Explanation:

after we add the equations

we get

x+y+x-y=2+4

2x=6

x=3

after substituting the value of x in any of the equations

we get y as 1