Question #44681

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Answer 1 · 2017-10-01T03:33:26

#n=9#

Identify and combine like terms on both sides:

#color(red)(6n)color(blue)(+3)color(red)(-7n)=color(blue)(11)color(red)(-2n)color(blue)(+1)#

#color(blue)3color(red)(-n)=color(blue)(12)color(red)(-2n)#

Add #2n# to both sides

#color(blue)(3)color(red)(-n+2n)=color(blue)(12)cancelcolor(red)(-2n+2n)#

#color(blue)(3)+color(red)(n)=color(blue)(12)#

Subtract #3# from both sides

#cancelcolor(blue)(3-3)+color(red)n=color(blue)(12-3)#

#n=9#