How do you simplify $-9(10-4k)+4$ ?

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Answer 1 · 2018-06-30T06:02:42

$36k - 86$

$-9(10-4k) + 4$

First, use the distributive property (shown below) to simplify $-9(10-4k)$ :
cdn.virtualnerd.com

Following this image, we know that:
$color(blue)(-9(10-4k) = (-9 * 10) + (-9 * -4k) = -90 + 36k)$

Put that back into the expression:
$-90 + 36k + 4$

Add $color(blue)(-90)$ and $color(blue)4$ :
$-86 + 36k$

$= 36k - 86$

Hope this helps!

How do you simplify -9(10-4k)+4 -9(10-4k)+4?