Question

In the equation x+y=4 ans x-y=2 then the value of y is

Answer 1

x+y=4

x-y=2

- + -

----------(subtract)

y+y=2

2y=2

y=2/2

y=1

the value of y is 1

hope this answer will help you.

Answer 2

x+y=4 -------1

x-y=2-----------2

Add eqn 1 and 2

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

x+y+x-y= 6

2x=6

x=6/2

x=3

Substituing the value of x in 1

3+y=4

y=4-3

y=1

Hope it helps

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