Using numbers, variables and symbols, write an expression that describes the following The sum of 12 and three times a number, n

12=3n

Step-by-step explanation:

Starting with "the sum 12" that means it equals 12 so, 12 = Something.

And three times a number, N would look like this; 3n.

So the sum of 12 - 12 =, three times a number n

12=3n