Question

How do you solve `x + y = 7/10` and `x - y = 5/14`?

Answer 1

`x=37/70`
`y=6/35`

Explanation:

`x+y=7/10` --- (1)
`x-y=5/14` --- (2)

(1) + (2)
`2x=37/35`
`x=37/70` --- (3)

Sub (3) into (1)
`37/70-y=5/14`
`y=6/35`