Question

How do you solve for x in `2x-a=b`?

Answer 1

`x=(a+b)/2`

Explanation:

`2x-a=b`
`color(white)("XXX")`adding `a` to both sides
`rarr 2x=a+b`
`color(white)("XXX")`dividing both sides by `2`
`rarr x=(a+b)/2`