Hi there! :)
Answer:
=150
*The answer must have a positive sign.*
Explanation:
Lesson: Order of operations
Stands for:
Parenthesis
Exponents
Multiply
Divide
Add
Subtract
Left to right.
First, you do multiply from left to right.




Then, you add from left to right.



Final answer is 150
I hope this helps you!
Have a nice day! :)
-Charlie
:D