PEMDAS
P - PARENTHESIS
E - EXPONENTS
M - MULTIPLICATION
D - DIVISION
A - ADDITION
S - SUBTRACTION
So we do that from left to right:
![[ 7+(15 -3)/6]* 3](https://img.qammunity.org/2016/formulas/mathematics/high-school/azto6fhsvtcmyetnjlmg672n0gexl1h19g.png)
First we do parenthesis:
![[ 7+12/6]* 3](https://img.qammunity.org/2016/formulas/mathematics/high-school/x2g6kwtc5boke5ia7a6ygshyfwxer4b0y3.png)
Now we have to take care of the next parenthesis. Inside of it is addition and division happening. So we have to do the division first:
![[ 7+2]* 3](https://img.qammunity.org/2016/formulas/mathematics/high-school/xpb41jo012qlahm5zea4heuafjgr0c7zfe.png)
Now we do the addition:

Now there is only one thing left: Multiplication

Your final answer is
