Respuesta :

Answer:

19= 12 + 3x

Step-by-step explanation:

This kind of question can be a little confusing at times especially when the numbers get bigger and messier so let's break it down piece by piece. Nineteen is twelve more than three times a number. This means that nineteen is twelve plus three times that unknown number. Three times that unknown number can be written as three times x or just 3x. Put that all together and you get 19 = 12 + 3x.