How do you solve #-10 = 9m -13 -7m#?

1 Answer
May 31, 2016

Answer:

#m=3/2=1.5#

Explanation:

#-10=9m-13-7m#

#-10=9m-7m-13#

#-10=2m-13#

Now add #13# to both sides:

#-10color(red)(+13)=2m-13color(red)(+13)#

#-10+13=2mcancel(-13)cancel(+13)#

#3=2m#

Divide both sides by #2#:

#3/color(red)(2)=(2m)/color(red)(2)#

#3/2=(cancel2m)/cancel2#

#3/2=m#

#1.5=m#