Answer:
![\boxed{ \bold{ \huge{ \boxed{ \sf{294}}}}}](https://img.qammunity.org/2021/formulas/mathematics/college/qzr9ogs5r0abrw2wdmopwrofiya1tnkr8o.png)
Explanation:
PEMDAS is a acronym which helps you to remember the order of operations.
PEMDAS stands for :
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Let's solve
![\sf{15 * 18 + 12 + 3 + 9}](https://img.qammunity.org/2021/formulas/mathematics/college/1s6a3cds02hepcqb1jjujajgjevledz16n.png)
Multiply the numbers : 15 × 18 = 270
⇒
![\sf{270 + 12 + 3 + 9}](https://img.qammunity.org/2021/formulas/mathematics/college/iwtbivhxhn2vweyz1hgm86gri60qgbnvn3.png)
Add the numbers : 270 + 12 + 3 + 9
⇒
![\sf{294}](https://img.qammunity.org/2021/formulas/mathematics/college/jv7j0tvki3rmwmzm0qqb18hbqng8d2mhs8.png)
Hope I helped!
Best regards!!