Question

How do you solve `7n+4-5n\leq 2(n+2)`?

Answer 1

`n` may have any value.

Explanation:

Work out the brackets and put the `n`'s together:

`7n-5n+4<=2n+2*2->`

`2n+4<=2n+4`

Which is only true if:

`2n+4=2n+4`

And this is true for every `n`.