Posted by amy on Saturday, January 31, 2009 at 11:29pm.
im having trouble with this one too.
6y8=6+3y+13
heres what ive done so far...not good.
6y8=6+3y+13
6y8=7+3y
6y 6y
8=73y

Math 012  Penny, Saturday, January 31, 2009 at 11:45pm
Ok I think this is how it goes:
6y8=6+3y+13
First add 8 to both sides
6y=15+3y
Next subtract your 3y from both sides
3y=15
so y must = 5
3(5)= 15
I think this is right 
Math 012  amy, Saturday, January 31, 2009 at 11:56pm
do you combine like terms before you add the 8 to both sides?

Math 012  drwls, Sunday, February 1, 2009 at 1:10am
The order of operations will not affect the answer, but it is best to "clean up" the equation first by combining terms, so the next step to perform will be easier to figure out.