First, combine like terms.
12y+6=6y+12 turns into
12y-6y=12-6, which is
6y=6. Now divide both sides by 6.
y=1
now do a quick check (cause that's always a good idea).
12(1)+6=6(1)+12
12+6=6+12
18=18 ; )
10
2+3=5 10x5=50 50 divided by 5= 10
Hope this helps!
Answer:
3 because 3-9=6 and 6/3=2