We have the following expression:
2(y - 3) - 6y
The first step to simplify the expression is applying the distributive property. So
2(y - 3) - 6y = 2*y + 2*(-3) - 6y = 2y - 6 - 6y
Now we combine the like terms:
2y - 6 - 6y = (2-6)y - 6 = -4y - 6
