Follow PEMDAS.
Parenthesis
Exponents
Multiplication & Division
Addition & Subtraction
Alright, do multiplication first, then division. Then, do subtraction then addition.

Hope this helped!
Answer:
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The answers 59 because 90 degrees is the angle so 21 plus 10 equals 31 and 90-31 equals 59
Answer:
the answer is 1100
Step-by-step explanation:
you will do... 5500*20/100