How do you simplify $-7(3x + 7) + 4$ ?

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Answer 1 · 2017-01-24T14:52:17

See the entire simplification process below:

First, expand the terms within the parenthesis:

$color(red)(-7)(3x + 7) + 4 -> (color(red)(-7) xx 3x) - (color(red)(7) xx 7) + 4 ->$

$-21x - 49 + 4$

Now, combine constants:

$-21x - 45$

A $color(red)(3)$ can also be factored from each term:

$(color(red)(3) xx -7)x - (color(red)(3) xx 15) -> 3(-7x + 15)$

How do you simplify -7(3x + 7) + 4-7(3x + 7) + 4?