# How do you simplify -8(1-5x)?

Mar 8, 2018

$- 8 + 40 x$

#### Explanation:

$- 8 \left(1 - 5 x\right)$

$= \left(- 8\right) \left(1\right) + \left(- 8\right) \left(- 5 x\right)$

$= - 8 + 40 x$

Mar 8, 2018

$- 8 + 40 x$

#### Explanation:

The parentheses tell us that we multiply all the terms by the outside factor.

So $- 8 \left(1 - 5 x\right)$ is really $- 8 \times 1 - \left(- 8 \times 5 x\right)$

NOTICE how I put the "stuff" after the subtraction sign into parentheses. That's because we need to simplify $- 8$ and $5 x$ before we subtract it

$- 8 - \left(- 40 x\right)$

$- 8 + 40 x$