How do you simplify #5m + 4n - 3( 7m - 3n ) #?

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Answer 1 · 2017-10-26T01:53:01

#-16m+13n#

Begin by distributing the #-3# to #(7m-3n)#

#5m+4ncolor(red)(-3)(7m-3n)#

#5m+4n[color(red)(-3*7m)][color(red)(-3*-3n)]#

#5m+4n-21m+9n#

Identify and combine like terms:

#color(red)(5m)+color(blue)(4n)color(red)(-21m)+color(blue)(9n)#

#[color(red)(5m-21m)][color(blue)(4n+9n)]#

#=color(red)(-16m)+color(blue)(13n)#