How do you simplify $-5a+10a+3b+7a-3b$ ?

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Answer 1 · 2015-09-07T12:35:45

$=12a$

$−5a+10a+3b+7a−3b$
$color(blue)(−5a+10a)+color(green)(3b)+color(blue)(7a)−color(green)(3b$

Grouping like terms

$= color(blue)(−5a+10a +7a)+color(green)(3b−3b$

$= color(blue)(5a +7a)+color(green)(0$

$=12a$

How do you simplify -5a+10a+3b+7a-3b-5a+10a+3b+7a-3b?