Question

How do you simplify `5(4+k)+3(2k-7)`?

Answer 1

`5(4+k)+3(2k-7)=11k-1`

Explanation:

What we need to remember here, is that the factor outside the parenthesis should be multiplied with each of the factors inside the parenthesis.

If you for instance have `a(b+c)`, that will be `(ab+ac)`.

If we use that here, we get:

`5(4+k)+3(2k-7)`
`=(5*4+5k)+(3*2k-3*7)`
`=20+5k+6k-21=11k-1`