How do you combine #(7m + 9n + 6p) - (4m + 2n + 5p)#?

1 Answer
Alan P.
Jul 22, 2015

Group the terms with identical variables to get:
#color(white)("XXXX")##3m +7n +p#

Explanation:

#(color(red)(7m+9n+6p)) - (color(blue)(4m+2n+5p))#

#color(white)("XXXX")##= [color(red)(7m) - color(blue)(4m)] + [color(red)(9n)- color(blue)(2n)] + [color(red)(6p) - color(blue)(5p)]#

#color(white)("XXXX")##=3m +7n +p#

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