How do you combine $( 2x - 3y)-(2x + 6y)$ ?

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Answer 1 · 2015-07-15T08:08:21

$=color(blue)(-9y$

$(2x-3y) - (2x+6y)$

$= 2x-3y - 2x -6y$

combining like terms:

$=color(blue)((2x-2x))+ (- 3y-6y)$
$=0 -9y$

$=color(blue)(-9y$

How do you combine ( 2x - 3y)-(2x + 6y)( 2x - 3y)-(2x + 6y)?