How do you combine like terms in $-3x - 3( - 6+ 6x )$ ?

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Answer 1 · 2017-07-05T12:40:05

See a solution process below:

First, expand the terms in parenthesis by multiplying each term within parenthesis by the term outside the parenthesis:

$-3x - color(red)(3)(-6 + 6x) =>$

$-3x + (-color(red)(3) xx -6) + (-color(red)(3) xx 6x) =>$

$-3x + 18 + (-18x) =>$

$-3x + 18 - 18x$

Next, group like terms:

$-3x - 18x + 18$

Now, combine like terms:

$(-3 - 18)x + 18$

$-21x + 18$

How do you combine like terms in -3x - 3( - 6+ 6x )-3x - 3( - 6+ 6x )?