Answer:

Step-by-step explanation:
You had to used pemdas stands for: p-parenthesis, e-exponents, m-multiply, d-divide, a-add, and s-subtract that came from left to right.
First you had multiply from left to right.


Next, add from left to right.

You can also multiply 42*3.

Add 126+5.



Finally, multiply.

Final answer: 
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie