Question

How do you simplify `(4-z)(-1)`?

Answer 1

so `(4-z)(-1)=z-4`

Explanation:

Multiply everything inside the bracket by negative 1

Note: negative times negative is positive

When multiplying, if the signs are different that the product is negative.

`(-1)xx4 = -4`
`(-1)xx(-z)=+z`

so `(4-z)(-1)=z-4`