How do you solve #-5n + 7- n = 12- n#?

Question

1301 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-09-18T06:05:54

Collect numbers on one side and letters on the other. #n=-1#

#-5n-n+n = 12-7#

When you put all letters on the left hand side and numbers on the right hand side.

#-5n = 5#

#n=5/-5#

#n=-1#

This is your solution.

Answer 2 · 2017-09-18T06:10:43

#n=-1#

#-5n+7-n=12-n#

Add #n# to both sides:

#-5n+7-n+n=12-n+n#

#-5n+7=12#

Subtract 7 from both sides:

#-5n+7-7=12-7#

#-5n=5#

Multiply both sides by #-1#

#-5ntimes-1=5times-1#

#5n=-5#

Divide both sides by 5:

#(5n)/5=(-5)/5#

#n=-1#