Question

How do you simplify `-r + 6r - 5(6r -4)`?

Answer 1

`=color(green)(−25r + 20`

Explanation:

`−r+6r−color(green)((5)) * (6r−4)`

`color(green)((5))` is multiplied with each term within the bracket:

`=−r+6r−color(green)((5)) * (6r) −color(green)((5)) *(-4)`

`=−r+6r−30 r + 20`

`=5r−30 r + 20`

`=color(green)(−25r + 20`