0 has no value, so we can just take it out of the equation.
6y = 12
Now, we have to get the variable by itself, so we have to get rid of that coefficient by dividing both sides by 6.
6y ÷ 6 = y
12 ÷ 6 = 2
y = 2
Let's check our work.
0+ 6×2 = 12
12 = 12
Hope this helps!