Can y’all please help me thank you will mark you BRAINLIST

First you have to put the correct number in the correct spot. Like so:
12 - 6 + 4 × 3
Next, times the 4 and the 3 together.
12 - 6 + 12
Then minus the 6 from the 12:
6 + 12
Now add the two numbers together:
18
There you go, hope I helped you out. Good luck and let me know if there is anything else I can help you with.