Question

If x+y=2 and x-y=1 then:

Answer 1

x + y = 2

x - y = 1

Adding the equations,

x + y + x - y = 2 + 1

2x = 3

x =
`(3)/(2)`

x + y = 2

y = 2 - x

y =
`2 - (3)/(2) = (4-3)/(2) = (1)/(2)`