Answer:
5 + 12 + 1 = 18
Step-by-step explanation:
You have to use PEMDAS
So...
5 + 3 * 4 + 1 (first multiply 3*4)
5 + 12 + 1 (now add them all together)
18
5 + 3 * 4 + 1 = 5 + 12 + 1
Hope this helps ya!!