How do you combine #7p + 3r + ( - 8p ) + 12r#?

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Answer 1 · 2017-09-09T01:46:40

See a solution process below:

First, remove the parenthesis being careful to manage the sign correctly:

#7p + 3r - 8p + 12r#

Next, group like terms:

#7p - 8p + 3r + 12r#

Now, combine like terms:

#(7 - 8)p + (3 + 12)r#

#-1p + 15r#

#-p + 15r#

Or

#15r - p#